[format.python] initial formatting of the python code

This patch was generated by black [1]:: make format.python [1] https://github.com/psf/black Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
2021-12-27 09:26:22 +01:00 · 2021-12-27 09:26:22 +01:00 · 3d96a9839a
commit 3d96a9839a
parent fcdc2c2cd2
184 changed files with 2800 additions and 2836 deletions
--- a/searx/init.py
+++ b/searx/init.py
@ -29,6 +29,7 @@ if settings is not None:

 _unset = object()

+
 def get_setting(name, default=_unset):
    """Returns the value to which ``name`` point.  If there is no such name in the
    settings and the ``default`` is unset, a :py:obj:`KeyError` is raised.
@ -80,14 +81,9 @@ def logging_config_debug():
            'levelname': {'color': 8},
            'name': {'color': 8},
            'programname': {'color': 'cyan'},
-            'username': {'color': 'yellow'}
+            'username': {'color': 'yellow'},
        }
-        coloredlogs.install(
-            level=log_level,
-            level_styles=level_styles,
-            field_styles=field_styles,
-            fmt=LOG_FORMAT_DEBUG
-        )
+        coloredlogs.install(level=log_level, level_styles=level_styles, field_styles=field_styles, fmt=LOG_FORMAT_DEBUG)
    else:
        logging.basicConfig(level=logging.getLevelName(log_level), format=LOG_FORMAT_DEBUG)

--- a/searx/answerers/random/answerer.py
+++ b/searx/answerers/random/answerer.py
@ -8,13 +8,12 @@ from flask_babel import gettext
 # specifies which search query keywords triggers this answerer
 keywords = ('random',)

-random_int_max = 2**31
+random_int_max = 2 ** 31
 random_string_letters = string.ascii_lowercase + string.digits + string.ascii_uppercase


 def random_characters():
-    return [random.choice(random_string_letters)
-            for _ in range(random.randint(8, 32))]
+    return [random.choice(random_string_letters) for _ in range(random.randint(8, 32))]


 def random_string():
@ -39,11 +38,13 @@ def random_uuid():
    return str(uuid.uuid4())


-random_types = {'string': random_string,
+random_types = {
+    'string': random_string,
    'int': random_int,
    'float': random_float,
    'sha256': random_sha256,
-                'uuid': random_uuid}
+    'uuid': random_uuid,
+}


 # required answerer function
@ -62,6 +63,8 @@ def answer(query):
 # required answerer function
 # returns information about the answerer
 def self_info():
-    return {'name': gettext('Random value generator'),
+    return {
+        'name': gettext('Random value generator'),
        'description': gettext('Generate different random values'),
-            'examples': ['random {}'.format(x) for x in random_types]}
+        'examples': ['random {}'.format(x) for x in random_types],
+    }
--- a/searx/answerers/statistics/answerer.py
+++ b/searx/answerers/statistics/answerer.py
@ -4,11 +4,7 @@ from operator import mul
 from flask_babel import gettext


-keywords = ('min',
-            'max',
-            'avg',
-            'sum',
-            'prod')
+keywords = ('min', 'max', 'avg', 'sum', 'prod')


 # required answerer function
@ -47,6 +43,8 @@ def answer(query):
 # required answerer function
 # returns information about the answerer
 def self_info():
-    return {'name': gettext('Statistics functions'),
+    return {
+        'name': gettext('Statistics functions'),
        'description': gettext('Compute {functions} of the arguments').format(functions='/'.join(keywords)),
-            'examples': ['avg 123 548 2.04 24.2']}
+        'examples': ['avg 123 548 2.04 24.2'],
+    }
--- a/searx/autocomplete.py
+++ b/searx/autocomplete.py
@ -120,14 +120,15 @@ def wikipedia(query, lang):
    return []


-backends = {'dbpedia': dbpedia,
+backends = {
+    'dbpedia': dbpedia,
    'duckduckgo': duckduckgo,
    'google': google,
    'startpage': startpage,
    'swisscows': swisscows,
    'qwant': qwant,
-            'wikipedia': wikipedia
-            }
+    'wikipedia': wikipedia,
+}


 def search_autocomplete(backend_name, query, lang):
--- a/searx/data/init.py
+++ b/searx/data/init.py
@ -23,10 +23,12 @@ from pathlib import Path

 data_dir = Path(__file__).parent

+
 def _load(filename):
    with open(data_dir / filename, encoding='utf-8') as f:
        return json.load(f)

+
 def ahmia_blacklist_loader():
    """Load data from `ahmia_blacklist.txt` and return a list of MD5 values of onion
    names.  The MD5 values are fetched by::
@ -39,6 +41,7 @@ def ahmia_blacklist_loader():
    with open(str(data_dir / 'ahmia_blacklist.txt'), encoding='utf-8') as f:
        return f.read().split()

+
 ENGINES_LANGUAGES = _load('engines_languages.json')
 CURRENCIES = _load('currencies.json')
 USER_AGENTS = _load('useragents.json')
--- a/searx/engines/1337x.py
+++ b/searx/engines/1337x.py
@ -43,11 +43,15 @@ def response(resp):
        filesize, filesize_multiplier = filesize_info.split()
        filesize = get_torrent_size(filesize, filesize_multiplier)

-        results.append({'url': href,
+        results.append(
+            {
+                'url': href,
                'title': title,
                'seed': seed,
                'leech': leech,
                'filesize': filesize,
-                        'template': 'torrent.html'})
+                'template': 'torrent.html',
+            }
+        )

    return results
--- a/searx/engines/init.py
+++ b/searx/engines/init.py
@ -57,6 +57,7 @@ engine_shortcuts = {}

 """

+
 def load_engine(engine_data):
    """Load engine from ``engine_data``.

@ -166,20 +167,19 @@ def set_language_attributes(engine):
        # settings.yml
        if engine.language not in engine.supported_languages:
            raise ValueError(
-                "settings.yml - engine: '%s' / language: '%s' not supported" % (
-                    engine.name, engine.language ))
+                "settings.yml - engine: '%s' / language: '%s' not supported" % (engine.name, engine.language)
+            )

        if isinstance(engine.supported_languages, dict):
-            engine.supported_languages = {
-                engine.language : engine.supported_languages[engine.language]
-            }
+            engine.supported_languages = {engine.language: engine.supported_languages[engine.language]}
        else:
            engine.supported_languages = [engine.language]

    # find custom aliases for non standard language codes
    for engine_lang in engine.supported_languages:
        iso_lang = match_language(engine_lang, BABEL_LANGS, fallback=None)
-        if (iso_lang
+        if (
+            iso_lang
            and iso_lang != engine_lang
            and not engine_lang.startswith(iso_lang)
            and iso_lang not in engine.supported_languages
@ -197,14 +197,12 @@ def set_language_attributes(engine):
        }
        engine.fetch_supported_languages = (
            # pylint: disable=protected-access
-            lambda: engine._fetch_supported_languages(
-                get(engine.supported_languages_url, headers=headers))
+            lambda: engine._fetch_supported_languages(get(engine.supported_languages_url, headers=headers))
        )


 def update_attributes_for_tor(engine):
-    if (settings['outgoing'].get('using_tor_proxy')
-        and hasattr(engine, 'onion_url') ):
+    if settings['outgoing'].get('using_tor_proxy') and hasattr(engine, 'onion_url'):
        engine.search_url = engine.onion_url + getattr(engine, 'search_path', '')
        engine.timeout += settings['outgoing'].get('extra_proxy_timeout', 0)

@ -217,9 +215,7 @@ def is_missing_required_attributes(engine):
    missing = False
    for engine_attr in dir(engine):
        if not engine_attr.startswith('_') and getattr(engine, engine_attr) is None:
-            logger.error(
-                'Missing engine config attribute: "{0}.{1}"'
-                .format(engine.name, engine_attr))
+            logger.error('Missing engine config attribute: "{0}.{1}"'.format(engine.name, engine_attr))
            missing = True
    return missing

@ -230,8 +226,7 @@ def is_engine_active(engine):
        return False

    # exclude onion engines if not using tor
-    if ('onions' in engine.categories
-        and not settings['outgoing'].get('using_tor_proxy') ):
+    if 'onions' in engine.categories and not settings['outgoing'].get('using_tor_proxy'):
        return False

    return True
@ -253,8 +248,7 @@ def register_engine(engine):


 def load_engines(engine_list):
-    """usage: ``engine_list = settings['engines']``
-    """
+    """usage: ``engine_list = settings['engines']``"""
    engines.clear()
    engine_shortcuts.clear()
    categories.clear()
--- a/searx/engines/ahmia.py
+++ b/searx/engines/ahmia.py
@ -25,9 +25,7 @@ page_size = 10
 # search url
 search_url = 'http://juhanurmihxlp77nkq76byazcldy2hlmovfu2epvl5ankdibsot4csyd.onion/search/?{query}'
 time_range_support = True
-time_range_dict = {'day': 1,
-                   'week': 7,
-                   'month': 30}
+time_range_dict = {'day': 1, 'week': 7, 'month': 30}

 # xpaths
 results_xpath = '//li[@class="result"]'
@ -54,7 +52,7 @@ def response(resp):
    # trim results so there's not way too many at once
    first_result_index = page_size * (resp.search_params.get('pageno', 1) - 1)
    all_results = eval_xpath_list(dom, results_xpath)
-    trimmed_results = all_results[first_result_index:first_result_index + page_size]
+    trimmed_results = all_results[first_result_index : first_result_index + page_size]

    # get results
    for result in trimmed_results:
@ -65,10 +63,7 @@ def response(resp):
        title = extract_text(eval_xpath(result, title_xpath))
        content = extract_text(eval_xpath(result, content_xpath))

-        results.append({'url': cleaned_url,
-                        'title': title,
-                        'content': content,
-                        'is_onion': True})
+        results.append({'url': cleaned_url, 'title': title, 'content': content, 'is_onion': True})

    # get spelling corrections
    for correction in eval_xpath_list(dom, correction_xpath):
--- a/searx/engines/apkmirror.py
+++ b/searx/engines/apkmirror.py
@ -35,8 +35,8 @@ search_url = base_url + '/?post_type=app_release&searchtype=apk&page={pageno}&{q

 def request(query, params):
    params['url'] = search_url.format(
-        pageno = params['pageno'],
-        query = urlencode({'s': query}),
+        pageno=params['pageno'],
+        query=urlencode({'s': query}),
    )
    logger.debug("query_url --> %s", params['url'])
    return params
@ -55,11 +55,7 @@ def response(resp):
        url = base_url + link.attrib.get('href') + '#downloads'
        title = extract_text(link)
        img_src = base_url + eval_xpath_getindex(result, './/img/@src', 0)
-        res = {
-            'url': url,
-            'title': title,
-            'img_src': img_src
-        }
+        res = {'url': url, 'title': title, 'img_src': img_src}

        results.append(res)

--- a/searx/engines/archlinux.py
+++ b/searx/engines/archlinux.py
@ -97,7 +97,7 @@ main_langs = {
    'sl': 'Slovenský',
    'th': 'ไทย',
    'uk': 'Українська',
-    'zh': '简体中文'
+    'zh': '简体中文',
 }
 supported_languages = dict(lang_urls, **main_langs)

@ -141,7 +141,6 @@ def response(resp):
        href = urljoin(base_url, link.attrib.get('href'))
        title = extract_text(link)

-        results.append({'url': href,
-                        'title': title})
+        results.append({'url': href, 'title': title})

    return results
--- a/searx/engines/artic.py
+++ b/searx/engines/artic.py
@ -27,19 +27,23 @@ nb_per_page = 20
 search_api = 'https://api.artic.edu/api/v1/artworks/search?'
 image_api = 'https://www.artic.edu/iiif/2/'

+
 def request(query, params):

-    args = urlencode({
-        'q' : query,
-        'page' : params['pageno'],
-        'fields' : 'id,title,artist_display,medium_display,image_id,date_display,dimensions,artist_titles',
-        'limit' : nb_per_page,
-        })
+    args = urlencode(
+        {
+            'q': query,
+            'page': params['pageno'],
+            'fields': 'id,title,artist_display,medium_display,image_id,date_display,dimensions,artist_titles',
+            'limit': nb_per_page,
+        }
+    )
    params['url'] = search_api + args

    logger.debug("query_url --> %s", params['url'])
    return params

+
 def response(resp):

    results = []
@ -50,14 +54,16 @@ def response(resp):
        if not result['image_id']:
            continue

-        results.append({
+        results.append(
+            {
                'url': 'https://artic.edu/artworks/%(id)s' % result,
                'title': result['title'] + " (%(date_display)s) //  %(artist_display)s" % result,
                'content': result['medium_display'],
                'author': ', '.join(result['artist_titles']),
                'img_src': image_api + '/%(image_id)s/full/843,/0/default.jpg' % result,
                'img_format': result['dimensions'],
-            'template': 'images.html'
-        })
+                'template': 'images.html',
+            }
+        )

    return results
--- a/searx/engines/arxiv.py
+++ b/searx/engines/arxiv.py
@ -20,8 +20,9 @@ about = {
 categories = ['science']
 paging = True

-base_url = 'https://export.arxiv.org/api/query?search_query=all:'\
-           + '{query}&start={offset}&max_results={number_of_results}'
+base_url = (
+    'https://export.arxiv.org/api/query?search_query=all:' + '{query}&start={offset}&max_results={number_of_results}'
+)

 # engine dependent config
 number_of_results = 10
@ -31,9 +32,7 @@ def request(query, params):
    # basic search
    offset = (params['pageno'] - 1) * number_of_results

-    string_args = dict(query=query,
-                       offset=offset,
-                       number_of_results=number_of_results)
+    string_args = dict(query=query, offset=offset, number_of_results=number_of_results)

    params['url'] = base_url.format(**string_args)

@ -65,10 +64,7 @@ def response(resp):

        publishedDate = datetime.strptime(eval_xpath_getindex(entry, './/published', 0).text, '%Y-%m-%dT%H:%M:%SZ')

-        res_dict = {'url': url,
-                    'title': title,
-                    'publishedDate': publishedDate,
-                    'content': content}
+        res_dict = {'url': url, 'title': title, 'publishedDate': publishedDate, 'content': content}

        results.append(res_dict)

--- a/searx/engines/bandcamp.py
+++ b/searx/engines/bandcamp.py
@ -44,9 +44,7 @@ def request(query, params):
      pageno  : 1 # number of the requested page
    '''

-    search_path = search_string.format(
-        query=urlencode({'q': query}),
-        page=params['pageno'])
+    search_path = search_string.format(query=urlencode({'q': query}), page=params['pageno'])

    params['url'] = base_url + search_path

--- a/searx/engines/base.py
+++ b/searx/engines/base.py
@ -21,8 +21,10 @@ about = {

 categories = ['science']

-base_url = 'https://api.base-search.net/cgi-bin/BaseHttpSearchInterface.fcgi'\
+base_url = (
+    'https://api.base-search.net/cgi-bin/BaseHttpSearchInterface.fcgi'
    + '?func=PerformSearch&{query}&boost=oa&hits={hits}&offset={offset}'
+)

 # engine dependent config
 paging = True
@ -47,7 +49,7 @@ shorcut_dict = {
    'source:': 'dcsource:',
    'subject:': 'dcsubject:',
    'title:': 'dctitle:',
-    'type:': 'dcdctype:'
+    'type:': 'dcdctype:',
 }


@ -59,9 +61,7 @@ def request(query, params):
    # basic search
    offset = (params['pageno'] - 1) * number_of_results

-    string_args = dict(query=urlencode({'query': query}),
-                       offset=offset,
-                       hits=number_of_results)
+    string_args = dict(query=urlencode({'query': query}), offset=offset, hits=number_of_results)

    params['url'] = base_url.format(**string_args)

@ -93,7 +93,7 @@ def response(resp):
                if len(item.text) > 300:
                    content += "..."

-# dates returned by the BASE API are not several formats
+        # dates returned by the BASE API are not several formats
        publishedDate = None
        for date_format in ['%Y-%m-%dT%H:%M:%SZ', '%Y-%m-%d', '%Y-%m', '%Y']:
            try:
@ -103,14 +103,9 @@ def response(resp):
                pass

        if publishedDate is not None:
-            res_dict = {'url': url,
-                        'title': title,
-                        'publishedDate': publishedDate,
-                        'content': content}
+            res_dict = {'url': url, 'title': title, 'publishedDate': publishedDate, 'content': content}
        else:
-            res_dict = {'url': url,
-                        'title': title,
-                        'content': content}
+            res_dict = {'url': url, 'title': title, 'content': content}

        results.append(res_dict)

--- a/searx/engines/bing.py
+++ b/searx/engines/bing.py
@ -36,9 +36,11 @@ inital_query = 'search?{query}&search=&form=QBLH'
 # following queries: https://www.bing.com/search?q=foo&search=&first=11&FORM=PERE
 page_query = 'search?{query}&search=&first={offset}&FORM=PERE'

+
 def _get_offset_from_pageno(pageno):
    return (pageno - 1) * 10 + 1

+
 def request(query, params):

    offset = _get_offset_from_pageno(params.get('pageno', 1))
@ -53,30 +55,23 @@ def request(query, params):
    if params['language'] == 'all':
        lang = 'EN'
    else:
-        lang = match_language(
-            params['language'], supported_languages, language_aliases
-        )
+        lang = match_language(params['language'], supported_languages, language_aliases)

-    query = 'language:{} {}'.format(
-        lang.split('-')[0].upper(), query
-    )
+    query = 'language:{} {}'.format(lang.split('-')[0].upper(), query)

-    search_path = search_string.format(
-        query = urlencode({'q': query}),
-        offset = offset)
+    search_path = search_string.format(query=urlencode({'q': query}), offset=offset)

    if offset > 1:
-        referer = base_url + inital_query.format(query = urlencode({'q': query}))
+        referer = base_url + inital_query.format(query=urlencode({'q': query}))
        params['headers']['Referer'] = referer
-        logger.debug("headers.Referer --> %s", referer )
+        logger.debug("headers.Referer --> %s", referer)

    params['url'] = base_url + search_path
    params['headers']['Accept-Language'] = "en-US,en;q=0.5"
-    params['headers']['Accept'] = (
-        'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
-    )
+    params['headers']['Accept'] = 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
    return params

+
 def response(resp):

    results = []
@ -95,11 +90,7 @@ def response(resp):
        content = extract_text(eval_xpath(result, './/p'))

        # append result
-        results.append({
-            'url': url,
-            'title': title,
-            'content': content
-        })
+        results.append({'url': url, 'title': title, 'content': content})

    # parse results again if nothing is found yet
    for result in eval_xpath(dom, '//li[@class="b_algo"]'):
@ -110,18 +101,14 @@ def response(resp):
        content = extract_text(eval_xpath(result, './/p'))

        # append result
-        results.append({
-            'url': url,
-            'title': title,
-            'content': content
-        })
+        results.append({'url': url, 'title': title, 'content': content})

    try:
        result_len_container = "".join(eval_xpath(dom, '//span[@class="sb_count"]//text()'))
        if "-" in result_len_container:

            # Remove the part "from-to" for paginated request ...
-            result_len_container = result_len_container[result_len_container.find("-") * 2 + 2:]
+            result_len_container = result_len_container[result_len_container.find("-") * 2 + 2 :]

        result_len_container = re.sub('[^0-9]', '', result_len_container)

--- a/searx/engines/bing_images.py
+++ b/searx/engines/bing_images.py
@ -9,7 +9,10 @@ from json import loads
 from searx.utils import match_language

 from searx.engines.bing import language_aliases
-from searx.engines.bing import _fetch_supported_languages, supported_languages_url  # NOQA # pylint: disable=unused-import
+from searx.engines.bing import (
+    _fetch_supported_languages,
+    supported_languages_url,
+)  # NOQA # pylint: disable=unused-import

 # about
 about = {
@ -31,39 +34,25 @@ number_of_results = 28

 # search-url
 base_url = 'https://www.bing.com/'
-search_string = 'images/search'\
-    '?{query}'\
-    '&count={count}'\
-    '&first={first}'\
-    '&tsc=ImageHoverTitle'
+search_string = 'images/search' '?{query}' '&count={count}' '&first={first}' '&tsc=ImageHoverTitle'
 time_range_string = '&qft=+filterui:age-lt{interval}'
-time_range_dict = {'day': '1440',
-                   'week': '10080',
-                   'month': '43200',
-                   'year': '525600'}
+time_range_dict = {'day': '1440', 'week': '10080', 'month': '43200', 'year': '525600'}

 # safesearch definitions
-safesearch_types = {2: 'STRICT',
-                    1: 'DEMOTE',
-                    0: 'OFF'}
+safesearch_types = {2: 'STRICT', 1: 'DEMOTE', 0: 'OFF'}


 # do search-request
 def request(query, params):
    offset = ((params['pageno'] - 1) * number_of_results) + 1

-    search_path = search_string.format(
-        query=urlencode({'q': query}),
-        count=number_of_results,
-        first=offset)
+    search_path = search_string.format(query=urlencode({'q': query}), count=number_of_results, first=offset)

    language = match_language(params['language'], supported_languages, language_aliases).lower()

-    params['cookies']['SRCHHPGUSR'] = \
-        'ADLT=' + safesearch_types.get(params['safesearch'], 'DEMOTE')
+    params['cookies']['SRCHHPGUSR'] = 'ADLT=' + safesearch_types.get(params['safesearch'], 'DEMOTE')

-    params['cookies']['_EDGE_S'] = 'mkt=' + language +\
-        '&ui=' + language + '&F=1'
+    params['cookies']['_EDGE_S'] = 'mkt=' + language + '&ui=' + language + '&F=1'

    params['url'] = base_url + search_path
    if params['time_range'] in time_range_dict:
@ -92,14 +81,18 @@ def response(resp):
            # strip 'Unicode private use area' highlighting, they render to Tux
            # the Linux penguin and a standing diamond on my machine...
            title = m.get('t', '').replace('\ue000', '').replace('\ue001', '')
-            results.append({'template': 'images.html',
+            results.append(
+                {
+                    'template': 'images.html',
                    'url': m['purl'],
                    'thumbnail_src': m['turl'],
                    'img_src': m['murl'],
                    'content': '',
                    'title': title,
                    'source': source,
-                            'img_format': img_format})
+                    'img_format': img_format,
+                }
+            )
        except:
            continue

--- a/searx/engines/bing_news.py
+++ b/searx/engines/bing_news.py
@ -13,10 +13,7 @@ from datetime import datetime
 from dateutil import parser
 from lxml import etree
 from lxml.etree import XPath
-from searx.utils import (
-    match_language,
-    eval_xpath_getindex
-)
+from searx.utils import match_language, eval_xpath_getindex
 from searx.engines.bing import (  # pylint: disable=unused-import
    language_aliases,
    _fetch_supported_languages,
@ -42,11 +39,8 @@ time_range_support = True
 base_url = 'https://www.bing.com/'
 search_string = 'news/search?{query}&first={offset}&format=RSS'
 search_string_with_time = 'news/search?{query}&first={offset}&qft=interval%3d"{interval}"&format=RSS'
-time_range_dict = {
-    'day': '7',
-    'week': '8',
-    'month': '9'
-}
+time_range_dict = {'day': '7', 'week': '8', 'month': '9'}
+

 def url_cleanup(url_string):
    """remove click"""
@ -57,6 +51,7 @@ def url_cleanup(url_string):
        url_string = query.get('url', None)
    return url_string

+
 def image_url_cleanup(url_string):
    """replace the http://*bing.com/th?id=... by https://www.bing.com/th?id=..."""

@ -66,6 +61,7 @@ def image_url_cleanup(url_string):
        url_string = "https://www.bing.com/th?id=" + quote(query.get('id'))
    return url_string

+
 def _get_url(query, language, offset, time_range):
    if time_range in time_range_dict:
        search_path = search_string_with_time.format(
@ -91,6 +87,7 @@ def _get_url(query, language, offset, time_range):
        )
    return base_url + search_path

+
 def request(query, params):

    if params['time_range'] and params['time_range'] not in time_range_dict:
@ -105,6 +102,7 @@ def request(query, params):

    return params

+
 def response(resp):

    results = []
@ -127,26 +125,16 @@ def response(resp):
            publishedDate = datetime.now()

        # thumbnail
-        thumbnail = eval_xpath_getindex(
-            item, XPath('./News:Image/text()', namespaces=namespaces), 0, default=None)
+        thumbnail = eval_xpath_getindex(item, XPath('./News:Image/text()', namespaces=namespaces), 0, default=None)
        if thumbnail is not None:
            thumbnail = image_url_cleanup(thumbnail)

        # append result
        if thumbnail is not None:
-            results.append({
-                'url': url,
-                'title': title,
-                'publishedDate': publishedDate,
-                'content': content,
-                'img_src': thumbnail
-            })
+            results.append(
+                {'url': url, 'title': title, 'publishedDate': publishedDate, 'content': content, 'img_src': thumbnail}
+            )
        else:
-            results.append({
-                'url': url,
-                'title': title,
-                'publishedDate': publishedDate,
-                'content': content
-            })
+            results.append({'url': url, 'title': title, 'publishedDate': publishedDate, 'content': content})

    return results
--- a/searx/engines/bing_videos.py
+++ b/searx/engines/bing_videos.py
@ -9,7 +9,10 @@ from urllib.parse import urlencode
 from searx.utils import match_language

 from searx.engines.bing import language_aliases
-from searx.engines.bing import _fetch_supported_languages, supported_languages_url  # NOQA # pylint: disable=unused-import
+from searx.engines.bing import (
+    _fetch_supported_languages,
+    supported_languages_url,
+)  # NOQA # pylint: disable=unused-import

 # about
 about = {
@ -28,36 +31,22 @@ time_range_support = True
 number_of_results = 28

 base_url = 'https://www.bing.com/'
-search_string = 'videos/search'\
-    '?{query}'\
-    '&count={count}'\
-    '&first={first}'\
-    '&scope=video'\
-    '&FORM=QBLH'
+search_string = 'videos/search' '?{query}' '&count={count}' '&first={first}' '&scope=video' '&FORM=QBLH'
 time_range_string = '&qft=+filterui:videoage-lt{interval}'
-time_range_dict = {'day': '1440',
-                   'week': '10080',
-                   'month': '43200',
-                   'year': '525600'}
+time_range_dict = {'day': '1440', 'week': '10080', 'month': '43200', 'year': '525600'}

 # safesearch definitions
-safesearch_types = {2: 'STRICT',
-                    1: 'DEMOTE',
-                    0: 'OFF'}
+safesearch_types = {2: 'STRICT', 1: 'DEMOTE', 0: 'OFF'}


 # do search-request
 def request(query, params):
    offset = ((params['pageno'] - 1) * number_of_results) + 1

-    search_path = search_string.format(
-        query=urlencode({'q': query}),
-        count=number_of_results,
-        first=offset)
+    search_path = search_string.format(query=urlencode({'q': query}), count=number_of_results, first=offset)

    # safesearch cookie
-    params['cookies']['SRCHHPGUSR'] = \
-        'ADLT=' + safesearch_types.get(params['safesearch'], 'DEMOTE')
+    params['cookies']['SRCHHPGUSR'] = 'ADLT=' + safesearch_types.get(params['safesearch'], 'DEMOTE')

    # language cookie
    language = match_language(params['language'], supported_languages, language_aliases).lower()
@ -89,11 +78,15 @@ def response(resp):
            info = ' - '.join(result.xpath('.//div[@class="mc_vtvc_meta_block"]//span/text()')).strip()
            content = '{0} - {1}'.format(metadata['du'], info)
            thumbnail = '{0}th?id={1}'.format(base_url, metadata['thid'])
-            results.append({'url': metadata['murl'],
+            results.append(
+                {
+                    'url': metadata['murl'],
                    'thumbnail': thumbnail,
                    'title': metadata.get('vt', ''),
                    'content': content,
-                            'template': 'videos.html'})
+                    'template': 'videos.html',
+                }
+            )

        except:
            continue
--- a/searx/engines/btdigg.py
+++ b/searx/engines/btdigg.py
@ -11,10 +11,7 @@ from searx.utils import extract_text, get_torrent_size
 about = {
    "website": 'https://btdig.com',
    "wikidata_id": 'Q4836698',
-    "official_api_documentation": {
-        'url': 'https://btdig.com/contacts',
-        'comment': 'on demand'
-    },
+    "official_api_documentation": {'url': 'https://btdig.com/contacts', 'comment': 'on demand'},
    "use_official_api": False,
    "require_api_key": False,
    "results": 'HTML',
@ -31,8 +28,7 @@ search_url = url + '/search?q={search_term}&p={pageno}'

 # do search-request
 def request(query, params):
-    params['url'] = search_url.format(search_term=quote(query),
-                                      pageno=params['pageno'] - 1)
+    params['url'] = search_url.format(search_term=quote(query), pageno=params['pageno'] - 1)

    return params

@ -77,13 +73,17 @@ def response(resp):
        magnetlink = result.xpath('.//div[@class="torrent_magnet"]//a')[0].attrib['href']

        # append result
-        results.append({'url': href,
+        results.append(
+            {
+                'url': href,
                'title': title,
                'content': content,
                'filesize': filesize,
                'files': files,
                'magnetlink': magnetlink,
-                        'template': 'torrent.html'})
+                'template': 'torrent.html',
+            }
+        )

    # return results sorted by seeder
    return results
--- a/searx/engines/ccengine.py
+++ b/searx/engines/ccengine.py
@ -29,10 +29,7 @@ search_string = '&page={page}&page_size={nb_per_page}&format=json&{query}'

 def request(query, params):

-    search_path = search_string.format(
-        query=urlencode({'q': query}),
-        nb_per_page=nb_per_page,
-        page=params['pageno'])
+    search_path = search_string.format(query=urlencode({'q': query}), nb_per_page=nb_per_page, page=params['pageno'])

    params['url'] = base_url + search_path

@ -45,9 +42,13 @@ def response(resp):
    json_data = loads(resp.text)

    for result in json_data['results']:
-        results.append({'url': result['foreign_landing_url'],
+        results.append(
+            {
+                'url': result['foreign_landing_url'],
                'title': result['title'],
                'img_src': result['url'],
-                        'template': 'images.html'})
+                'template': 'images.html',
+            }
+        )

    return results
--- a/searx/engines/command.py
+++ b/searx/engines/command.py
@ -138,7 +138,7 @@ def __check_query_params(params):


 def check_parsing_options(engine_settings):
-    """ Checks if delimiter based parsing or regex parsing is configured correctly """
+    """Checks if delimiter based parsing or regex parsing is configured correctly"""

    if 'delimiter' not in engine_settings and 'parse_regex' not in engine_settings:
        raise ValueError('failed to init settings for parsing lines: missing delimiter or parse_regex')
@ -151,7 +151,7 @@ def check_parsing_options(engine_settings):


 def __parse_single_result(raw_result):
-    """ Parses command line output based on configuration """
+    """Parses command line output based on configuration"""

    result = {}

@ -167,6 +167,6 @@ def __parse_single_result(raw_result):
            found = regex.search(raw_result)
            if not found:
                return {}
-            result[result_key] = raw_result[found.start():found.end()]
+            result[result_key] = raw_result[found.start() : found.end()]

    return result
--- a/searx/engines/core.py
+++ b/searx/engines/core.py
@ -28,22 +28,24 @@ api_key = 'unset'
 base_url = 'https://core.ac.uk:443/api-v2/search/'
 search_string = '{query}?page={page}&pageSize={nb_per_page}&apiKey={apikey}'

+
 def request(query, params):

    if api_key == 'unset':
        raise SearxEngineAPIException('missing CORE API key')

    search_path = search_string.format(
-        query = urlencode({'q': query}),
-        nb_per_page = nb_per_page,
-        page = params['pageno'],
-        apikey = api_key,
+        query=urlencode({'q': query}),
+        nb_per_page=nb_per_page,
+        page=params['pageno'],
+        apikey=api_key,
    )
    params['url'] = base_url + search_path

    logger.debug("query_url --> %s", params['url'])
    return params

+
 def response(resp):
    results = []
    json_data = loads(resp.text)
@ -52,7 +54,7 @@ def response(resp):

        source = result['_source']
        time = source['publishedDate'] or source['depositedDate']
-        if time :
+        if time:
            date = datetime.fromtimestamp(time / 1000)
        else:
            date = None
@ -66,12 +68,14 @@ def response(resp):
            metadata.append(source['doi'])
        metadata = ' / '.join(metadata)

-        results.append({
+        results.append(
+            {
                'url': source['urls'][0].replace('http://', 'https://', 1),
                'title': source['title'],
                'content': source['description'],
                'publishedDate': date,
-            'metadata' : metadata,
-        })
+                'metadata': metadata,
+            }
+        )

    return results
--- a/searx/engines/currency_convert.py
+++ b/searx/engines/currency_convert.py
@ -30,7 +30,7 @@ def request(query, params):

 def response(resp):
    """remove first and last lines to get only json"""
-    json_resp = resp.text[resp.text.find('\n') + 1:resp.text.rfind('\n') - 2]
+    json_resp = resp.text[resp.text.find('\n') + 1 : resp.text.rfind('\n') - 2]
    results = []
    try:
        conversion_rate = float(json.loads(json_resp)['conversion']['converted-amount'])
@ -47,7 +47,8 @@ def response(resp):
    )

    url = 'https://duckduckgo.com/js/spice/currency/1/{0}/{1}'.format(
-        resp.search_params['from'].upper(), resp.search_params['to'])
+        resp.search_params['from'].upper(), resp.search_params['to']
+    )

    results.append({'answer': answer, 'url': url})

--- a/searx/engines/dailymotion.py
+++ b/searx/engines/dailymotion.py
@ -25,8 +25,10 @@ paging = True
 # search-url
 # see http://www.dailymotion.com/doc/api/obj-video.html
 search_url = 'https://api.dailymotion.com/videos?fields=created_time,title,description,duration,url,thumbnail_360_url,id&sort=relevance&limit=5&page={pageno}&{query}'  # noqa
-embedded_url = '<iframe frameborder="0" width="540" height="304" ' +\
-    'data-src="https://www.dailymotion.com/embed/video/{videoid}" allowfullscreen></iframe>'
+embedded_url = (
+    '<iframe frameborder="0" width="540" height="304" '
+    + 'data-src="https://www.dailymotion.com/embed/video/{videoid}" allowfullscreen></iframe>'
+)

 supported_languages_url = 'https://api.dailymotion.com/languages'

@ -39,8 +41,8 @@ def request(query, params):
        locale = match_language(params['language'], supported_languages)

    params['url'] = search_url.format(
-        query=urlencode({'search': query, 'localization': locale}),
-        pageno=params['pageno'])
+        query=urlencode({'search': query, 'localization': locale}), pageno=params['pageno']
+    )

    return params

@ -67,13 +69,17 @@ def response(resp):
        # http to https
        thumbnail = thumbnail.replace("http://", "https://")

-        results.append({'template': 'videos.html',
+        results.append(
+            {
+                'template': 'videos.html',
                'url': url,
                'title': title,
                'content': content,
                'publishedDate': publishedDate,
                'embedded': embedded,
-                        'thumbnail': thumbnail})
+                'thumbnail': thumbnail,
+            }
+        )

    # return results
    return results
--- a/searx/engines/deezer.py
+++ b/searx/engines/deezer.py
@ -24,9 +24,11 @@ paging = True
 url = 'https://api.deezer.com/'
 search_url = url + 'search?{query}&index={offset}'

-embedded_url = '<iframe scrolling="no" frameborder="0" allowTransparency="true" ' +\
-    'data-src="https://www.deezer.com/plugins/player?type=tracks&id={audioid}" ' +\
-    'width="540" height="80"></iframe>'
+embedded_url = (
+    '<iframe scrolling="no" frameborder="0" allowTransparency="true" '
+    + 'data-src="https://www.deezer.com/plugins/player?type=tracks&id={audioid}" '
+    + 'width="540" height="80"></iframe>'
+)


 # do search-request
@ -53,18 +55,12 @@ def response(resp):
            if url.startswith('http://'):
                url = 'https' + url[4:]

-            content = '{} - {} - {}'.format(
-                result['artist']['name'],
-                result['album']['title'],
-                result['title'])
+            content = '{} - {} - {}'.format(result['artist']['name'], result['album']['title'], result['title'])

            embedded = embedded_url.format(audioid=result['id'])

            # append result
-            results.append({'url': url,
-                            'title': title,
-                            'embedded': embedded,
-                            'content': content})
+            results.append({'url': url, 'title': title, 'embedded': embedded, 'content': content})

    # return results
    return results
--- a/searx/engines/demo_offline.py
+++ b/searx/engines/demo_offline.py
@ -31,6 +31,7 @@ about = {
 # if there is a need for globals, use a leading underline
 _my_offline_engine = None

+
 def init(engine_settings=None):
    """Initialization of the (offline) engine.  The origin of this demo engine is a
    simple json string which is loaded in this example while the engine is
@ -44,11 +45,10 @@ def init(engine_settings=None):
        ', {"value":"first item"}'
        ', {"value":"second item"}'
        ', {"value":"third item"}'
-        ']'
-
-        % engine_settings.get('name')
+        ']' % engine_settings.get('name')
    )

+
 def search(query, request_params):
    """Query (offline) engine and return results.  Assemble the list of results from
    your local engine.  In this demo engine we ignore the 'query' term, usual
@ -62,11 +62,11 @@ def search(query, request_params):

    for row in result_list:
        entry = {
-            'query' : query,
-            'language' : request_params['language'],
-            'value' : row.get("value"),
+            'query': query,
+            'language': request_params['language'],
+            'value': row.get("value"),
            # choose a result template or comment out to use the *default*
-            'template' : 'key-value.html',
+            'template': 'key-value.html',
        }
        ret_val.append(entry)

--- a/searx/engines/demo_online.py
+++ b/searx/engines/demo_online.py
@ -43,6 +43,7 @@ about = {
 # if there is a need for globals, use a leading underline
 _my_online_engine = None

+
 def init(engine_settings):
    """Initialization of the (online) engine.  If no initialization is needed, drop
    this init function.
@ -51,20 +52,24 @@ def init(engine_settings):
    global _my_online_engine  # pylint: disable=global-statement
    _my_online_engine = engine_settings.get('name')

+
 def request(query, params):
    """Build up the ``params`` for the online request.  In this example we build a
    URL to fetch images from `artic.edu <https://artic.edu>`__

    """
-    args = urlencode({
-        'q' : query,
-        'page' : params['pageno'],
-        'fields' : 'id,title,artist_display,medium_display,image_id,date_display,dimensions,artist_titles',
-        'limit' : page_size,
-        })
+    args = urlencode(
+        {
+            'q': query,
+            'page': params['pageno'],
+            'fields': 'id,title,artist_display,medium_display,image_id,date_display,dimensions,artist_titles',
+            'limit': page_size,
+        }
+    )
    params['url'] = search_api + args
    return params

+
 def response(resp):
    """Parse out the result items from the response.  In this example we parse the
    response from `api.artic.edu <https://artic.edu>`__ and filter out all
@ -79,14 +84,16 @@ def response(resp):
        if not result['image_id']:
            continue

-        results.append({
+        results.append(
+            {
                'url': 'https://artic.edu/artworks/%(id)s' % result,
                'title': result['title'] + " (%(date_display)s) //  %(artist_display)s" % result,
                'content': result['medium_display'],
                'author': ', '.join(result['artist_titles']),
                'img_src': image_api + '/%(image_id)s/full/843,/0/default.jpg' % result,
                'img_format': result['dimensions'],
-            'template': 'images.html'
-        })
+                'template': 'images.html',
+            }
+        )

    return results
--- a/searx/engines/deviantart.py
+++ b/searx/engines/deviantart.py
@ -32,13 +32,14 @@ time_range_dict = {
 # search-url
 base_url = 'https://www.deviantart.com'

+
 def request(query, params):

    # https://www.deviantart.com/search/deviations?page=5&q=foo

    query = {
-        'page' : params['pageno'],
-        'q'    : query,
+        'page': params['pageno'],
+        'q': query,
    }
    if params['time_range'] in time_range_dict:
        query['order'] = time_range_dict[params['time_range']]
@ -47,6 +48,7 @@ def request(query, params):

    return params

+
 def response(resp):

    results = []
@ -67,11 +69,13 @@ def response(resp):
                continue
            img_tag = img_tag[0]

-            results.append({
+            results.append(
+                {
                    'template': 'images.html',
                    'url': a_tag.attrib.get('href'),
                    'img_src': img_tag.attrib.get('src'),
                    'title': img_tag.attrib.get('alt'),
-            })
+                }
+            )

    return results
--- a/searx/engines/dictzone.py
+++ b/searx/engines/dictzone.py
@ -27,9 +27,7 @@ https_support = True


 def request(query, params):
-    params['url'] = url.format(from_lang=params['from_lang'][2],
-                               to_lang=params['to_lang'][2],
-                               query=params['query'])
+    params['url'] = url.format(from_lang=params['from_lang'][2], to_lang=params['to_lang'][2], query=params['query'])

    return params

@ -51,10 +49,12 @@ def response(resp):
            if t.strip():
                to_results.append(to_result.text_content())

-        results.append({
+        results.append(
+            {
                'url': urljoin(str(resp.url), '?%d' % k),
                'title': from_result.text_content(),
-            'content': '; '.join(to_results)
-        })
+                'content': '; '.join(to_results),
+            }
+        )

    return results
--- a/searx/engines/digbt.py
+++ b/searx/engines/digbt.py
@ -48,13 +48,17 @@ def response(resp):
        filesize = get_torrent_size(files_data[FILESIZE], files_data[FILESIZE_MULTIPLIER])
        magnetlink = result.xpath('.//div[@class="tail"]//a[@class="title"]/@href')[0]

-        results.append({'url': url,
+        results.append(
+            {
+                'url': url,
                'title': title,
                'content': content,
                'filesize': filesize,
                'magnetlink': magnetlink,
                'seed': 'N/A',
                'leech': 'N/A',
-                        'template': 'torrent.html'})
+                'template': 'torrent.html',
+            }
+        )

    return results
--- a/searx/engines/docker_hub.py
+++ b/searx/engines/docker_hub.py
@ -15,7 +15,7 @@ about = {
    "use_official_api": True,
    "require_api_key": False,
    "results": 'JSON',
- }
+}

 categories = ['it']  # optional
 paging = True
@ -23,6 +23,7 @@ paging = True
 base_url = "https://hub.docker.com/"
 search_url = base_url + "api/content/v1/products/search?{query}&type=image&page_size=25"

+
 def request(query, params):

    params['url'] = search_url.format(query=urlencode(dict(q=query, page=params["pageno"])))
@ -30,6 +31,7 @@ def request(query, params):

    return params

+
 def response(resp):
    '''post-response callback
    resp: requests response object
@ -53,12 +55,8 @@ def response(resp):
                result["url"] = base_url + "r/" + item.get('slug', "")
            result["title"] = item.get("name")
            result["content"] = item.get("short_description")
-            result["publishedDate"] = parser.parse(
-                item.get("updated_at") or item.get("created_at")
-            )
-            result["thumbnail"] = (
-                item["logo_url"].get("large") or item["logo_url"].get("small")
-            )
+            result["publishedDate"] = parser.parse(item.get("updated_at") or item.get("created_at"))
+            result["thumbnail"] = item["logo_url"].get("large") or item["logo_url"].get("small")
            results.append(result)

    return results
--- a/searx/engines/doku.py
+++ b/searx/engines/doku.py
@ -25,8 +25,7 @@ number_of_results = 5
 # search-url
 # Doku is OpenSearch compatible
 base_url = 'http://localhost:8090'
-search_url = '/?do=search'\
-             '&{query}'
+search_url = '/?do=search' '&{query}'
 # TODO             '&startRecord={offset}'\
 # TODO             '&maximumRecords={limit}'\

@ -34,8 +33,7 @@ search_url = '/?do=search'\
 # do search-request
 def request(query, params):

-    params['url'] = base_url +\
-        search_url.format(query=urlencode({'id': query}))
+    params['url'] = base_url + search_url.format(query=urlencode({'id': query}))

    return params

@ -60,9 +58,7 @@ def response(resp):
        title = extract_text(eval_xpath(r, './/a[@class="wikilink1"]/@title'))

        # append result
-        results.append({'title': title,
-                        'content': "",
-                        'url': base_url + res_url})
+        results.append({'title': title, 'content': "", 'url': base_url + res_url})

    # Search results
    for r in eval_xpath(doc, '//dl[@class="search_results"]/*'):
@ -74,9 +70,7 @@ def response(resp):
                content = extract_text(eval_xpath(r, '.'))

                # append result
-                results.append({'title': title,
-                                'content': content,
-                                'url': base_url + res_url})
+                results.append({'title': title, 'content': content, 'url': base_url + res_url})
        except:
            continue

--- a/searx/engines/duckduckgo.py
+++ b/searx/engines/duckduckgo.py
@ -39,15 +39,10 @@ language_aliases = {
    'ko': 'kr-KR',
    'sl-SI': 'sl-SL',
    'zh-TW': 'tzh-TW',
-    'zh-HK': 'tzh-HK'
+    'zh-HK': 'tzh-HK',
 }

-time_range_dict = {
-    'day': 'd',
-    'week': 'w',
-    'month': 'm',
-    'year': 'y'
-}
+time_range_dict = {'day': 'd', 'week': 'w', 'month': 'm', 'year': 'y'}

 # search-url
 url = 'https://lite.duckduckgo.com/lite'
@ -118,6 +113,7 @@ def request(query, params):
    logger.debug("param cookies: %s", params['cookies'])
    return params

+
 # get response from search-request
 def response(resp):

@ -163,21 +159,24 @@ def response(resp):
        if td_content is None:
            continue

-        results.append({
+        results.append(
+            {
                'title': a_tag.text_content(),
                'content': extract_text(td_content),
                'url': a_tag.get('href'),
-        })
+            }
+        )

    return results

+
 # get supported languages from their site
 def _fetch_supported_languages(resp):

    # response is a js file with regions as an embedded object
    response_page = resp.text
-    response_page = response_page[response_page.find('regions:{') + 8:]
-    response_page = response_page[:response_page.find('}') + 1]
+    response_page = response_page[response_page.find('regions:{') + 8 :]
+    response_page = response_page[: response_page.find('}') + 1]

    regions_json = loads(response_page)
    supported_languages = map((lambda x: x[3:] + '-' + x[:2].upper()), regions_json.keys())
--- a/searx/engines/duckduckgo_definitions.py
+++ b/searx/engines/duckduckgo_definitions.py
@ -10,7 +10,10 @@ from lxml import html

 from searx.data import WIKIDATA_UNITS
 from searx.engines.duckduckgo import language_aliases
-from searx.engines.duckduckgo import _fetch_supported_languages, supported_languages_url  # NOQA # pylint: disable=unused-import
+from searx.engines.duckduckgo import (
+    _fetch_supported_languages,
+    supported_languages_url,
+)  # NOQA # pylint: disable=unused-import
 from searx.utils import extract_text, html_to_text, match_language, get_string_replaces_function
 from searx.external_urls import get_external_url, get_earth_coordinates_url, area_to_osm_zoom

@ -24,19 +27,15 @@ about = {
    "results": 'JSON',
 }

-URL = 'https://api.duckduckgo.com/'\
-    + '?{query}&format=json&pretty=0&no_redirect=1&d=1'
+URL = 'https://api.duckduckgo.com/' + '?{query}&format=json&pretty=0&no_redirect=1&d=1'

-WIKIDATA_PREFIX = [
-    'http://www.wikidata.org/entity/',
-    'https://www.wikidata.org/entity/'
-]
+WIKIDATA_PREFIX = ['http://www.wikidata.org/entity/', 'https://www.wikidata.org/entity/']

 replace_http_by_https = get_string_replaces_function({'http:': 'https:'})


 def is_broken_text(text):
-    """ duckduckgo may return something like "<a href="xxxx">http://somewhere Related website<a/>"
+    """duckduckgo may return something like "<a href="xxxx">http://somewhere Related website<a/>"

    The href URL is broken, the "Related website" may contains some HTML.

@ -61,11 +60,7 @@ def result_to_text(text, htmlResult):

 def request(query, params):
    params['url'] = URL.format(query=urlencode({'q': query}))
-    language = match_language(
-        params['language'],
-        supported_languages,
-        language_aliases
-    )
+    language = match_language(params['language'], supported_languages, language_aliases)
    language = language.split('-')[0]
    params['headers']['Accept-Language'] = language
    return params
@ -127,23 +122,14 @@ def response(resp):
            firstURL = ddg_result.get('FirstURL')
            text = ddg_result.get('Text')
            if not is_broken_text(text):
-                suggestion = result_to_text(
-                    text,
-                    ddg_result.get('Result')
-                )
+                suggestion = result_to_text(text, ddg_result.get('Result'))
                if suggestion != heading and suggestion is not None:
                    results.append({'suggestion': suggestion})
        elif 'Topics' in ddg_result:
            suggestions = []
-            relatedTopics.append({
-                'name': ddg_result.get('Name', ''),
-                'suggestions': suggestions
-            })
+            relatedTopics.append({'name': ddg_result.get('Name', ''), 'suggestions': suggestions})
            for topic_result in ddg_result.get('Topics', []):
-                suggestion = result_to_text(
-                    topic_result.get('Text'),
-                    topic_result.get('Result')
-                )
+                suggestion = result_to_text(topic_result.get('Text'), topic_result.get('Result'))
                if suggestion != heading and suggestion is not None:
                    suggestions.append(suggestion)

@ -152,25 +138,15 @@ def response(resp):
    if abstractURL != '':
        # add as result ? problem always in english
        infobox_id = abstractURL
-        urls.append({
-            'title': search_res.get('AbstractSource'),
-            'url': abstractURL,
-            'official': True
-        })
-        results.append({
-            'url': abstractURL,
-            'title': heading
-        })
+        urls.append({'title': search_res.get('AbstractSource'), 'url': abstractURL, 'official': True})
+        results.append({'url': abstractURL, 'title': heading})

    # definition
    definitionURL = search_res.get('DefinitionURL', '')
    if definitionURL != '':
        # add as result ? as answer ? problem always in english
        infobox_id = definitionURL
-        urls.append({
-            'title': search_res.get('DefinitionSource'),
-            'url': definitionURL
-        })
+        urls.append({'title': search_res.get('DefinitionSource'), 'url': definitionURL})

    # to merge with wikidata's infobox
    if infobox_id:
@ -198,10 +174,7 @@ def response(resp):
                # * netflix_id
                external_url = get_external_url(data_type, data_value)
                if external_url is not None:
-                    urls.append({
-                        'title': data_label,
-                        'url': external_url
-                    })
+                    urls.append({'title': data_label, 'url': external_url})
                elif data_type in ['instance', 'wiki_maps_trigger', 'google_play_artist_id']:
                    # ignore instance: Wikidata value from "Instance Of" (Qxxxx)
                    # ignore wiki_maps_trigger: reference to a javascript
@ -211,11 +184,7 @@ def response(resp):
                    # There is already an URL for the website
                    pass
                elif data_type == 'area':
-                    attributes.append({
-                        'label': data_label,
-                        'value': area_to_str(data_value),
-                        'entity': 'P2046'
-                    })
+                    attributes.append({'label': data_label, 'value': area_to_str(data_value), 'entity': 'P2046'})
                    osm_zoom = area_to_osm_zoom(data_value.get('amount'))
                elif data_type == 'coordinates':
                    if data_value.get('globe') == 'http://www.wikidata.org/entity/Q2':
@ -224,16 +193,9 @@ def response(resp):
                        coordinates = info
                    else:
                        # coordinate NOT on Earth
-                        attributes.append({
-                            'label': data_label,
-                            'value': data_value,
-                            'entity': 'P625'
-                        })
+                        attributes.append({'label': data_label, 'value': data_value, 'entity': 'P625'})
                elif data_type == 'string':
-                    attributes.append({
-                        'label': data_label,
-                        'value': data_value
-                    })
+                    attributes.append({'label': data_label, 'value': data_value})

            if coordinates:
                data_label = coordinates.get('label')
@ -241,31 +203,24 @@ def response(resp):
                latitude = data_value.get('latitude')
                longitude = data_value.get('longitude')
                url = get_earth_coordinates_url(latitude, longitude, osm_zoom)
-                urls.append({
-                    'title': 'OpenStreetMap',
-                    'url': url,
-                    'entity': 'P625'
-                })
+                urls.append({'title': 'OpenStreetMap', 'url': url, 'entity': 'P625'})

    if len(heading) > 0:
        # TODO get infobox.meta.value where .label='article_title'    # pylint: disable=fixme
-        if image is None and len(attributes) == 0 and len(urls) == 1 and\
-           len(relatedTopics) == 0 and len(content) == 0:
-            results.append({
-                'url': urls[0]['url'],
-                'title': heading,
-                'content': content
-            })
+        if image is None and len(attributes) == 0 and len(urls) == 1 and len(relatedTopics) == 0 and len(content) == 0:
+            results.append({'url': urls[0]['url'], 'title': heading, 'content': content})
        else:
-            results.append({
+            results.append(
+                {
                    'infobox': heading,
                    'id': infobox_id,
                    'content': content,
                    'img_src': image,
                    'attributes': attributes,
                    'urls': urls,
-                'relatedTopics': relatedTopics
-            })
+                    'relatedTopics': relatedTopics,
+                }
+            )

    return results

@ -273,7 +228,7 @@ def response(resp):
 def unit_to_str(unit):
    for prefix in WIKIDATA_PREFIX:
        if unit.startswith(prefix):
-            wikidata_entity = unit[len(prefix):]
+            wikidata_entity = unit[len(prefix) :]
            return WIKIDATA_UNITS.get(wikidata_entity, unit)
    return unit

--- a/searx/engines/duckduckgo_images.py
+++ b/searx/engines/duckduckgo_images.py
@ -7,7 +7,10 @@ from json import loads
 from urllib.parse import urlencode
 from searx.exceptions import SearxEngineAPIException
 from searx.engines.duckduckgo import get_region_code
-from searx.engines.duckduckgo import _fetch_supported_languages, supported_languages_url  # NOQA # pylint: disable=unused-import
+from searx.engines.duckduckgo import (
+    _fetch_supported_languages,
+    supported_languages_url,
+)  # NOQA # pylint: disable=unused-import
 from searx.network import get

 # about
@ -41,8 +44,8 @@ def get_vqd(query, headers):
    content = res.text
    if content.find('vqd=\'') == -1:
        raise SearxEngineAPIException('Request failed')
-    vqd = content[content.find('vqd=\'') + 5:]
-    vqd = vqd[:vqd.find('\'')]
+    vqd = content[content.find('vqd=\'') + 5 :]
+    vqd = vqd[: vqd.find('\'')]
    return vqd


@ -61,10 +64,10 @@ def request(query, params):
    region_code = get_region_code(params['language'], lang_list=supported_languages)
    if region_code:
        params['url'] = images_url.format(
-            query=urlencode({'q': query, 'l': region_code}), offset=offset, safesearch=safesearch, vqd=vqd)
+            query=urlencode({'q': query, 'l': region_code}), offset=offset, safesearch=safesearch, vqd=vqd
+        )
    else:
-        params['url'] = images_url.format(
-            query=urlencode({'q': query}), offset=offset, safesearch=safesearch, vqd=vqd)
+        params['url'] = images_url.format(query=urlencode({'q': query}), offset=offset, safesearch=safesearch, vqd=vqd)

    return params

@ -84,11 +87,15 @@ def response(resp):
        image = result['image']

        # append result
-        results.append({'template': 'images.html',
+        results.append(
+            {
+                'template': 'images.html',
                'title': title,
                'content': '',
                'thumbnail_src': thumbnail,
                'img_src': image,
-                        'url': url})
+                'url': url,
+            }
+        )

    return results
--- a/searx/engines/duden.py
+++ b/searx/engines/duden.py
@ -38,7 +38,7 @@ def request(query, params):
      pageno  : 1 # number of the requested page
    '''

-    offset = (params['pageno'] - 1)
+    offset = params['pageno'] - 1
    if offset == 0:
        search_url_fmt = base_url + 'suchen/dudenonline/{query}'
        params['url'] = search_url_fmt.format(query=quote(query))
@ -58,9 +58,9 @@ def response(resp):

    dom = html.fromstring(resp.text)

-    number_of_results_element =\
-        eval_xpath_getindex(dom, '//a[@class="active" and contains(@href,"/suchen/dudenonline")]/span/text()',
-                            0, default=None)
+    number_of_results_element = eval_xpath_getindex(
+        dom, '//a[@class="active" and contains(@href,"/suchen/dudenonline")]/span/text()', 0, default=None
+    )
    if number_of_results_element is not None:
        number_of_results_string = re.sub('[^0-9]', '', number_of_results_element)
        results.append({'number_of_results': int(number_of_results_string)})
@ -71,8 +71,6 @@ def response(resp):
        title = eval_xpath(result, 'string(.//h2/a)').strip()
        content = extract_text(eval_xpath(result, './/p'))
        # append result
-        results.append({'url': url,
-                        'title': title,
-                        'content': content})
+        results.append({'url': url, 'title': title, 'content': content})

    return results
--- a/searx/engines/dummy-offline.py
+++ b/searx/engines/dummy-offline.py
@ -15,6 +15,8 @@ about = {


 def search(query, request_params):
-    return [{
+    return [
+        {
            'result': 'this is what you get',
-    }]
+        }
+    ]
--- a/searx/engines/ebay.py
+++ b/searx/engines/ebay.py
@ -58,7 +58,8 @@ def response(resp):
        if title == "":
            continue

-        results.append({
+        results.append(
+            {
                'url': url,
                'title': title,
                'content': content,
@ -67,7 +68,7 @@ def response(resp):
                'source_country': source_country,
                'thumbnail': thumbnail,
                'template': 'products.html',
-
-        })
+            }
+        )

    return results
--- a/searx/engines/elasticsearch.py
+++ b/searx/engines/elasticsearch.py
@ -119,9 +119,7 @@ def response(resp):
        r['template'] = 'key-value.html'

        if show_metadata:
-            r['metadata'] = {'index': result['_index'],
-                             'id': result['_id'],
-                             'score': result['_score']}
+            r['metadata'] = {'index': result['_index'], 'id': result['_id'], 'score': result['_score']}

        results.append(r)

@ -133,12 +131,10 @@ _available_query_types = {
    # https://www.elastic.co/guide/en/elasticsearch/reference/current/full-text-queries.html
    'match': _match_query,
    'simple_query_string': _simple_query_string_query,
-
    # Term-level queries
    # https://www.elastic.co/guide/en/elasticsearch/reference/current/term-level-queries.html
    'term': _term_query,
    'terms': _terms_query,
-
    # Query JSON defined by the instance administrator.
    'custom': _custom_query,
 }
--- a/searx/engines/etools.py
+++ b/searx/engines/etools.py
@ -22,10 +22,7 @@ paging = False
 safesearch = True

 base_url = 'https://www.etools.ch'
-search_path = '/searchAdvancedSubmit.do'\
-    '?query={search_term}'\
-    '&pageResults=20'\
-    '&safeSearch={safesearch}'
+search_path = '/searchAdvancedSubmit.do' '?query={search_term}' '&pageResults=20' '&safeSearch={safesearch}'


 def request(query, params):
@ -49,8 +46,6 @@ def response(resp):
        title = extract_text(eval_xpath(result, './a//text()'))
        content = extract_text(eval_xpath(result, './/div[@class="text"]//text()'))

-        results.append({'url': url,
-                        'title': title,
-                        'content': content})
+        results.append({'url': url, 'title': title, 'content': content})

    return results
--- a/searx/engines/fdroid.py
+++ b/searx/engines/fdroid.py
@ -42,13 +42,13 @@ def response(resp):
    for app in dom.xpath('//a[@class="package-header"]'):
        app_url = app.xpath('./@href')[0]
        app_title = extract_text(app.xpath('./div/h4[@class="package-name"]/text()'))
-        app_content = extract_text(app.xpath('./div/div/span[@class="package-summary"]')).strip() \
-            + ' - ' + extract_text(app.xpath('./div/div/span[@class="package-license"]')).strip()
+        app_content = (
+            extract_text(app.xpath('./div/div/span[@class="package-summary"]')).strip()
+            + ' - '
+            + extract_text(app.xpath('./div/div/span[@class="package-license"]')).strip()
+        )
        app_img_src = app.xpath('./img[@class="package-icon"]/@src')[0]

-        results.append({'url': app_url,
-                        'title': app_title,
-                        'content': app_content,
-                        'img_src': app_img_src})
+        results.append({'url': app_url, 'title': app_title, 'content': app_content, 'img_src': app_img_src})

    return results
--- a/searx/engines/flickr.py
+++ b/searx/engines/flickr.py
@ -25,10 +25,12 @@ paging = True
 api_key = None


-url = 'https://api.flickr.com/services/rest/?method=flickr.photos.search' +\
-      '&api_key={api_key}&{text}&sort=relevance' +\
-      '&extras=description%2C+owner_name%2C+url_o%2C+url_n%2C+url_z' +\
-      '&per_page={nb_per_page}&format=json&nojsoncallback=1&page={page}'
+url = (
+    'https://api.flickr.com/services/rest/?method=flickr.photos.search'
+    + '&api_key={api_key}&{text}&sort=relevance'
+    + '&extras=description%2C+owner_name%2C+url_o%2C+url_n%2C+url_z'
+    + '&per_page={nb_per_page}&format=json&nojsoncallback=1&page={page}'
+)
 photo_url = 'https://www.flickr.com/photos/{userid}/{photoid}'

 paging = True
@ -39,10 +41,9 @@ def build_flickr_url(user_id, photo_id):


 def request(query, params):
-    params['url'] = url.format(text=urlencode({'text': query}),
-                               api_key=api_key,
-                               nb_per_page=nb_per_page,
-                               page=params['pageno'])
+    params['url'] = url.format(
+        text=urlencode({'text': query}), api_key=api_key, nb_per_page=nb_per_page, page=params['pageno']
+    )
    return params


@ -69,7 +70,7 @@ def response(resp):
        else:
            continue

-# For a bigger thumbnail, keep only the url_z, not the url_n
+        # For a bigger thumbnail, keep only the url_z, not the url_n
        if 'url_n' in photo:
            thumbnail_src = photo['url_n']
        elif 'url_z' in photo:
@ -80,13 +81,17 @@ def response(resp):
        url = build_flickr_url(photo['owner'], photo['id'])

        # append result
-        results.append({'url': url,
+        results.append(
+            {
+                'url': url,
                'title': photo['title'],
                'img_src': img_src,
                'thumbnail_src': thumbnail_src,
                'content': photo['description']['_content'],
                'author': photo['ownername'],
-                        'template': 'images.html'})
+                'template': 'images.html',
+            }
+        )

    # return results
    return results
--- a/searx/engines/flickr_noapi.py
+++ b/searx/engines/flickr_noapi.py
@ -30,10 +30,12 @@ image_sizes = ('o', 'k', 'h', 'b', 'c', 'z', 'n', 'm', 't', 'q', 's')

 paging = True
 time_range_support = True
-time_range_dict = {'day': 60 * 60 * 24,
+time_range_dict = {
+    'day': 60 * 60 * 24,
    'week': 60 * 60 * 24 * 7,
    'month': 60 * 60 * 24 * 7 * 4,
-                   'year': 60 * 60 * 24 * 7 * 52}
+    'year': 60 * 60 * 24 * 7 * 52,
+}


 def build_flickr_url(user_id, photo_id):
@ -47,8 +49,9 @@ def _get_time_range_url(time_range):


 def request(query, params):
-    params['url'] = (search_url.format(query=urlencode({'text': query}), page=params['pageno'])
-                     + _get_time_range_url(params['time_range']))
+    params['url'] = search_url.format(query=urlencode({'text': query}), page=params['pageno']) + _get_time_range_url(
+        params['time_range']
+    )
    return params


@ -83,10 +86,9 @@ def response(resp):
        for image_size in image_sizes:
            if image_size in photo['sizes']:
                img_src = photo['sizes'][image_size]['url']
-                img_format = 'jpg ' \
-                    + str(photo['sizes'][image_size]['width']) \
-                    + 'x' \
-                    + str(photo['sizes'][image_size]['height'])
+                img_format = (
+                    'jpg ' + str(photo['sizes'][image_size]['width']) + 'x' + str(photo['sizes'][image_size]['height'])
+                )
                break

        if not img_src:
@ -113,7 +115,7 @@ def response(resp):
            'thumbnail_src': thumbnail_src,
            'source': source,
            'img_format': img_format,
-            'template': 'images.html'
+            'template': 'images.html',
        }
        result['author'] = author.encode(errors='ignore').decode()
        result['source'] = source.encode(errors='ignore').decode()
--- a/searx/engines/framalibre.py
+++ b/searx/engines/framalibre.py
@ -35,9 +35,8 @@ content_xpath = './/div[@class="content"]//p'

 # do search-request
 def request(query, params):
-    offset = (params['pageno'] - 1)
-    params['url'] = search_url.format(query=urlencode({'keys': query}),
-                                      offset=offset)
+    offset = params['pageno'] - 1
+    params['url'] = search_url.format(query=urlencode({'keys': query}), offset=offset)

    return params

@ -63,10 +62,7 @@ def response(resp):
        content = escape(extract_text(result.xpath(content_xpath)))

        # append result
-        results.append({'url': href,
-                        'title': title,
-                        'img_src': thumbnail,
-                        'content': content})
+        results.append({'url': href, 'title': title, 'img_src': thumbnail, 'content': content})

    # return results
    return results
--- a/searx/engines/freesound.py
+++ b/searx/engines/freesound.py
@ -26,8 +26,7 @@ paging = True
 # search url
 url = "https://freesound.org/apiv2/"
 search_url = (
-    url
-    + "search/text/?query={query}&page={page}&fields=name,url,download,created,description,type&token={api_key}"
+    url + "search/text/?query={query}&page={page}&fields=name,url,download,created,description,type&token={api_key}"
 )

 embedded_url = '<audio controls><source src="{uri}" type="audio/{ftype}"></audio>'
--- a/searx/engines/frinkiac.py
+++ b/searx/engines/frinkiac.py
@ -10,10 +10,7 @@ from urllib.parse import urlencode
 about = {
    "website": 'https://frinkiac.com',
    "wikidata_id": 'Q24882614',
-    "official_api_documentation": {
-        'url': None,
-        'comment': 'see https://github.com/MitchellAW/CompuGlobal'
-    },
+    "official_api_documentation": {'url': None, 'comment': 'see https://github.com/MitchellAW/CompuGlobal'},
    "use_official_api": False,
    "require_api_key": False,
    "results": 'JSON',
@ -40,12 +37,15 @@ def response(resp):
        episode = result['Episode']
        timestamp = result['Timestamp']

-        results.append({'template': 'images.html',
-                        'url': RESULT_URL.format(base=BASE,
-                                                 query=urlencode({'p': 'caption', 'e': episode, 't': timestamp})),
+        results.append(
+            {
+                'template': 'images.html',
+                'url': RESULT_URL.format(base=BASE, query=urlencode({'p': 'caption', 'e': episode, 't': timestamp})),
                'title': episode,
                'content': '',
                'thumbnail_src': THUMB_URL.format(base=BASE, episode=episode, timestamp=timestamp),
-                        'img_src': IMAGE_URL.format(base=BASE, episode=episode, timestamp=timestamp)})
+                'img_src': IMAGE_URL.format(base=BASE, episode=episode, timestamp=timestamp),
+            }
+        )

    return results
--- a/searx/engines/gentoo.py
+++ b/searx/engines/gentoo.py
@ -37,15 +37,12 @@ def locale_to_lang_code(locale):
 # wikis for some languages were moved off from the main site, we need to make
 # requests to correct URLs to be able to get results in those languages
 lang_urls = {
-    'en': {
-        'base': 'https://wiki.gentoo.org',
-        'search': '/index.php?title=Special:Search&offset={offset}&{query}'
-    },
+    'en': {'base': 'https://wiki.gentoo.org', 'search': '/index.php?title=Special:Search&offset={offset}&{query}'},
    'others': {
        'base': 'https://wiki.gentoo.org',
        'search': '/index.php?title=Special:Search&offset={offset}&{query}\
-                &profile=translation&languagefilter={language}'
-    }
+                &profile=translation&languagefilter={language}',
+    },
 }


@ -78,7 +75,7 @@ main_langs = {
    'sl': 'Slovenský',
    'th': 'ไทย',
    'uk': 'Українська',
-    'zh': '简体中文'
+    'zh': '简体中文',
 }
 supported_languages = dict(lang_urls, **main_langs)

@ -101,8 +98,7 @@ def request(query, params):
    urls = get_lang_urls(language)
    search_url = urls['base'] + urls['search']

-    params['url'] = search_url.format(query=query, offset=offset,
-                                      language=language)
+    params['url'] = search_url.format(query=query, offset=offset, language=language)

    return params

@ -123,7 +119,6 @@ def response(resp):
        href = urljoin(base_url, link.attrib.get('href'))
        title = extract_text(link)

-        results.append({'url': href,
-                        'title': title})
+        results.append({'url': href, 'title': title})

    return results
--- a/searx/engines/gigablast.py
+++ b/searx/engines/gigablast.py
@ -55,12 +55,12 @@ def fetch_extra_param(query_args, headers):
    extra_param_path = search_path + urlencode(query_args)
    text = get(base_url + extra_param_path, headers=headers).text

-    re_var= None
+    re_var = None
    for line in text.splitlines():
        if re_var is None and extra_param_path in line:
            var = line.split("=")[0].split()[1]  # e.g. var --> 'uxrl'
            re_var = re.compile(var + "\\s*=\\s*" + var + "\\s*\\+\\s*'" + "(.*)" + "'(.*)")
-            extra_param = line.split("'")[1][len(extra_param_path):]
+            extra_param = line.split("'")[1][len(extra_param_path) :]
            continue
        if re_var is not None and re_var.search(line):
            extra_param += re_var.search(line).group(1)
@ -69,12 +69,7 @@ def fetch_extra_param(query_args, headers):

 # do search-request
 def request(query, params):  # pylint: disable=unused-argument
-    query_args = dict(
-        c = 'main'
-        , q = query
-        , dr = 1
-        , showgoodimages = 0
-    )
+    query_args = dict(c='main', q=query, dr=1, showgoodimages=0)

    if params['language'] and params['language'] != 'all':
        query_args['qlangcountry'] = params['language']
@ -93,6 +88,7 @@ def request(query, params):  # pylint: disable=unused-argument

    return params

+
 # get response from search-request
 def response(resp):
    results = []
@ -125,10 +121,6 @@ def response(resp):
        if len(subtitle) > 3 and subtitle != title:
            title += " - " + subtitle

-        results.append(dict(
-            url = url
-            , title = title
-            , content = content
-        ))
+        results.append(dict(url=url, title=title, content=content))

    return results
--- a/searx/engines/github.py
+++ b/searx/engines/github.py
@ -55,9 +55,7 @@ def response(resp):
            content = ''

        # append result
-        results.append({'url': url,
-                        'title': title,
-                        'content': content})
+        results.append({'url': url, 'title': title, 'content': content})

    # return results
    return results
--- a/searx/engines/google.py
+++ b/searx/engines/google.py
@ -100,22 +100,13 @@ google_domains = {
    'UA': 'google.com.ua',  # Ukraine
    'CN': 'google.com.hk',  # There is no google.cn, we use .com.hk for zh-CN
    'HK': 'google.com.hk',  # Hong Kong
-    'TW': 'google.com.tw'   # Taiwan
+    'TW': 'google.com.tw',  # Taiwan
 }

-time_range_dict = {
-    'day': 'd',
-    'week': 'w',
-    'month': 'm',
-    'year': 'y'
-}
+time_range_dict = {'day': 'd', 'week': 'w', 'month': 'm', 'year': 'y'}

 # Filter results. 0: None, 1: Moderate, 2: Strict
-filter_mapping = {
-    0: 'off',
-    1: 'medium',
-    2: 'high'
-}
+filter_mapping = {0: 'off', 1: 'medium', 2: 'high'}

 # specific xpath variables
 # ------------------------
@ -140,6 +131,7 @@ content_xpath = './/div[@class="IsZvec"]'
 # from the links not the links itself.
 suggestion_xpath = '//div[contains(@class, "EIaa9b")]//a'

+
 def get_lang_info(params, lang_list, custom_aliases, supported_any_language):
    """Composing various language properties for the google engines.

@ -184,11 +176,11 @@ def get_lang_info(params, lang_list, custom_aliases, supported_any_language):
            request's headers)
    """
    ret_val = {
-        'language' : None,
-        'country' : None,
-        'subdomain' : None,
-        'params' : {},
-        'headers' : {},
+        'language': None,
+        'country': None,
+        'subdomain': None,
+        'params': {},
+        'headers': {},
    }

    # language ...
@ -250,15 +242,18 @@ def get_lang_info(params, lang_list, custom_aliases, supported_any_language):
        ret_val['params']['lr'] = "lang_" + lang_list.get(lang_country, language)

        # Accept-Language: fr-CH, fr;q=0.8, en;q=0.6, *;q=0.5
-        ret_val['headers']['Accept-Language'] = ','.join([
+        ret_val['headers']['Accept-Language'] = ','.join(
+            [
                lang_country,
                language + ';q=0.8,',
                'en;q=0.6',
                '*;q=0.5',
-        ])
+            ]
+        )

    return ret_val

+
 def detect_google_sorry(resp):
    if resp.url.host == 'sorry.google.com' or resp.url.path.startswith('/sorry'):
        raise SearxEngineCaptchaException()
@ -269,9 +264,7 @@ def request(query, params):

    offset = (params['pageno'] - 1) * 10

-    lang_info = get_lang_info(
-        params, supported_languages, language_aliases, True
-    )
+    lang_info = get_lang_info(params, supported_languages, language_aliases, True)

    additional_parameters = {}
    if use_mobile_ui:
@ -281,7 +274,13 @@ def request(query, params):
        }

    # https://www.google.de/search?q=corona&hl=de&lr=lang_de&start=0&tbs=qdr%3Ad&safe=medium
-    query_url = 'https://' + lang_info['subdomain'] + '/search' + "?" + urlencode({
+    query_url = (
+        'https://'
+        + lang_info['subdomain']
+        + '/search'
+        + "?"
+        + urlencode(
+            {
                'q': query,
                **lang_info['params'],
                'ie': "utf8",
@ -289,7 +288,9 @@ def request(query, params):
                'start': offset,
                'filter': '0',
                **additional_parameters,
-    })
+            }
+        )
+    )

    if params['time_range'] in time_range_dict:
        query_url += '&' + urlencode({'tbs': 'qdr:' + time_range_dict[params['time_range']]})
@ -301,9 +302,7 @@ def request(query, params):
    if use_mobile_ui:
        params['headers']['Accept'] = '*/*'
    else:
-        params['headers']['Accept'] = (
-            'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
-        )
+        params['headers']['Accept'] = 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'

    return params

@ -355,11 +354,7 @@ def response(resp):
            if url is None:
                continue
            content = extract_text(eval_xpath_getindex(result, content_xpath, 0, default=None), allow_none=True)
-            results.append({
-                'url': url,
-                'title': title,
-                'content': content
-            })
+            results.append({'url': url, 'title': title, 'content': content})
        except Exception as e:  # pylint: disable=broad-except
            logger.error(e, exc_info=True)
            # from lxml import etree
--- a/searx/engines/google_images.py
+++ b/searx/engines/google_images.py
@ -30,10 +30,8 @@ from searx.engines.google import (
 )

 # pylint: disable=unused-import
-from searx.engines.google import (
-    supported_languages_url
-    ,  _fetch_supported_languages
-)
+from searx.engines.google import supported_languages_url, _fetch_supported_languages
+
 # pylint: enable=unused-import

 # about
@ -53,21 +51,16 @@ use_locale_domain = True
 time_range_support = True
 safesearch = True

-filter_mapping = {
-    0: 'images',
-    1: 'active',
-    2: 'active'
-}
+filter_mapping = {0: 'images', 1: 'active', 2: 'active'}


 def scrap_out_thumbs(dom):
-    """Scrap out thumbnail data from <script> tags.
-    """
+    """Scrap out thumbnail data from <script> tags."""
    ret_val = {}
    for script in eval_xpath(dom, '//script[contains(., "_setImgSrc(")]'):
        _script = script.text
        # _setImgSrc('0','data:image\/jpeg;base64,\/9j\/4AAQSkZJR ....');
-        _thumb_no, _img_data = _script[len("_setImgSrc("):-2].split(",", 1)
+        _thumb_no, _img_data = _script[len("_setImgSrc(") : -2].split(",", 1)
        _thumb_no = _thumb_no.replace("'", "")
        _img_data = _img_data.replace("'", "")
        _img_data = _img_data.replace(r"\/", r"/")
@ -76,8 +69,7 @@ def scrap_out_thumbs(dom):


 def scrap_img_by_id(script, data_id):
-    """Get full image URL by data-id in parent element
-    """
+    """Get full image URL by data-id in parent element"""
    img_url = ''
    _script = script.split('\n')
    for i, line in enumerate(_script):
@ -91,20 +83,25 @@ def scrap_img_by_id(script, data_id):
 def request(query, params):
    """Google-Video search request"""

-    lang_info = get_lang_info(
-        params, supported_languages, language_aliases, False
-    )
-    logger.debug(
-        "HTTP header Accept-Language --> %s", lang_info['headers']['Accept-Language'])
+    lang_info = get_lang_info(params, supported_languages, language_aliases, False)
+    logger.debug("HTTP header Accept-Language --> %s", lang_info['headers']['Accept-Language'])

-    query_url = 'https://' + lang_info['subdomain'] + '/search' + "?" + urlencode({
+    query_url = (
+        'https://'
+        + lang_info['subdomain']
+        + '/search'
+        + "?"
+        + urlencode(
+            {
                'q': query,
                'tbm': "isch",
                **lang_info['params'],
                'ie': "utf8",
                'oe': "utf8",
                'num': 30,
-    })
+            }
+        )
+    )

    if params['time_range'] in time_range_dict:
        query_url += '&' + urlencode({'tbs': 'qdr:' + time_range_dict[params['time_range']]})
@ -113,9 +110,7 @@ def request(query, params):
    params['url'] = query_url

    params['headers'].update(lang_info['headers'])
-    params['headers']['Accept'] = (
-        'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
-    )
+    params['headers']['Accept'] = 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
    return params


@ -128,8 +123,7 @@ def response(resp):
    # convert the text to dom
    dom = html.fromstring(resp.text)
    img_bas64_map = scrap_out_thumbs(dom)
-    img_src_script = eval_xpath_getindex(
-        dom, '//script[contains(., "AF_initDataCallback({key: ")]', 1).text
+    img_src_script = eval_xpath_getindex(dom, '//script[contains(., "AF_initDataCallback({key: ")]', 1).text

    # parse results
    #
@ -189,7 +183,8 @@ def response(resp):
        if not src_url:
            src_url = thumbnail_src

-        results.append({
+        results.append(
+            {
                'url': url,
                'title': img_alt,
                'content': pub_descr,
@ -197,7 +192,8 @@ def response(resp):
                'img_src': src_url,
                # 'img_format': img_format,
                'thumbnail_src': thumbnail_src,
-            'template': 'images.html'
-        })
+                'template': 'images.html',
+            }
+        )

    return results
--- a/searx/engines/google_news.py
+++ b/searx/engines/google_news.py
@ -32,6 +32,7 @@ from searx.engines.google import (
    supported_languages_url,
    _fetch_supported_languages,
 )
+
 # pylint: enable=unused-import

 from searx.engines.google import (
@ -71,14 +72,12 @@ time_range_support = True
 #  safesearch : results are identitical for safesearch=0 and safesearch=2
 safesearch = False

+
 def request(query, params):
    """Google-News search request"""

-    lang_info = get_lang_info(
-        params, supported_languages, language_aliases, False
-    )
-    logger.debug(
-        "HTTP header Accept-Language --> %s", lang_info['headers']['Accept-Language'])
+    lang_info = get_lang_info(params, supported_languages, language_aliases, False)
+    logger.debug("HTTP header Accept-Language --> %s", lang_info['headers']['Accept-Language'])

    # google news has only one domain
    lang_info['subdomain'] = 'news.google.com'
@ -94,19 +93,26 @@ def request(query, params):
    if params['time_range']:
        query += ' ' + time_range_dict[params['time_range']]

-    query_url = 'https://' + lang_info['subdomain'] + '/search' + "?" + urlencode({
+    query_url = (
+        'https://'
+        + lang_info['subdomain']
+        + '/search'
+        + "?"
+        + urlencode(
+            {
                'q': query,
                **lang_info['params'],
                'ie': "utf8",
                'oe': "utf8",
                'gl': lang_info['country'],
-    }) + ('&ceid=%s' % ceid)  # ceid includes a ':' character which must not be urlencoded
+            }
+        )
+        + ('&ceid=%s' % ceid)
+    )  # ceid includes a ':' character which must not be urlencoded
    params['url'] = query_url

    params['headers'].update(lang_info['headers'])
-    params['headers']['Accept'] = (
-        'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
-        )
+    params['headers']['Accept'] = 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
    params['headers']['Cookie'] = "CONSENT=YES+cb.%s-14-p0.en+F+941;" % datetime.now().strftime("%Y%m%d")

    return params
@ -141,7 +147,7 @@ def response(resp):
            # jslog="95014; 5:W251bGwsbnVsbCxudW...giXQ==; track:click"
            jslog = jslog.split(";")[1].split(':')[1].strip()
            try:
-                padding = (4 -(len(jslog) % 4)) * "="
+                padding = (4 - (len(jslog) % 4)) * "="
                jslog = b64decode(jslog + padding)
            except binascii.Error:
                # URL cant be read, skip this result
@ -178,12 +184,14 @@ def response(resp):

        img_src = extract_text(result.xpath('preceding-sibling::a/figure/img/@src'))

-        results.append({
+        results.append(
+            {
                'url': url,
                'title': title,
                'content': content,
                'img_src': img_src,
-        })
+            }
+        )

    # return results
    return results
--- a/searx/engines/google_scholar.py
+++ b/searx/engines/google_scholar.py
@ -32,6 +32,7 @@ from searx.engines.google import (
    supported_languages_url,
    _fetch_supported_languages,
 )
+
 # pylint: enable=unused-import

 # about
@ -52,6 +53,7 @@ use_locale_domain = True
 time_range_support = True
 safesearch = False

+
 def time_range_url(params):
    """Returns a URL query component for a google-Scholar time range based on
    ``params['time_range']``.  Google-Scholar does only support ranges in years.
@ -64,7 +66,7 @@ def time_range_url(params):
    # as_ylo=2016&as_yhi=2019
    ret_val = ''
    if params['time_range'] in time_range_dict:
-        ret_val= urlencode({'as_ylo': datetime.now().year -1 })
+        ret_val = urlencode({'as_ylo': datetime.now().year - 1})
    return '&' + ret_val


@ -72,34 +74,38 @@ def request(query, params):
    """Google-Scholar search request"""

    offset = (params['pageno'] - 1) * 10
-    lang_info = get_lang_info(
-        params, supported_languages, language_aliases, False
-    )
-    logger.debug(
-        "HTTP header Accept-Language --> %s", lang_info['headers']['Accept-Language'])
+    lang_info = get_lang_info(params, supported_languages, language_aliases, False)
+    logger.debug("HTTP header Accept-Language --> %s", lang_info['headers']['Accept-Language'])

    # subdomain is: scholar.google.xy
    lang_info['subdomain'] = lang_info['subdomain'].replace("www.", "scholar.")

-    query_url = 'https://'+ lang_info['subdomain'] + '/scholar' + "?" + urlencode({
+    query_url = (
+        'https://'
+        + lang_info['subdomain']
+        + '/scholar'
+        + "?"
+        + urlencode(
+            {
                'q': query,
                **lang_info['params'],
                'ie': "utf8",
                'oe': "utf8",
-        'start' : offset,
-    })
+                'start': offset,
+            }
+        )
+    )

    query_url += time_range_url(params)
    params['url'] = query_url

    params['headers'].update(lang_info['headers'])
-    params['headers']['Accept'] = (
-        'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
-    )
+    params['headers']['Accept'] = 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'

-    #params['google_subdomain'] = subdomain
+    # params['google_subdomain'] = subdomain
    return params

+
 def response(resp):
    """Get response from google's search request"""
    results = []
@ -132,11 +138,13 @@ def response(resp):
        if pub_type:
            title = title + " " + pub_type

-        results.append({
+        results.append(
+            {
                'url': url,
                'title': title,
                'content': content,
-        })
+            }
+        )

    # parse suggestion
    for suggestion in eval_xpath(dom, '//div[contains(@class, "gs_qsuggest_wrap")]//li//a'):
--- a/searx/engines/google_videos.py
+++ b/searx/engines/google_videos.py
@ -38,10 +38,8 @@ from searx.engines.google import (
 )

 # pylint: disable=unused-import
-from searx.engines.google import (
-    supported_languages_url
-    ,  _fetch_supported_languages
-)
+from searx.engines.google import supported_languages_url, _fetch_supported_languages
+
 # pylint: enable=unused-import

 # about
@ -65,6 +63,7 @@ safesearch = True

 RE_CACHE = {}

+
 def _re(regexpr):
    """returns compiled regular expression"""
    RE_CACHE[regexpr] = RE_CACHE.get(regexpr, re.compile(regexpr))
@ -77,18 +76,17 @@ def scrap_out_thumbs_src(dom):
    for script in eval_xpath_list(dom, '//script[contains(., "google.ldi={")]'):
        _script = script.text
        # "dimg_35":"https://i.ytimg.c....",
-        _dimurl = _re("s='([^']*)").findall( _script)
-        for k,v in _re('(' + thumb_name + '[0-9]*)":"(http[^"]*)' ).findall(_script):
-            v = v.replace(r'\u003d','=')
-            v = v.replace(r'\u0026','&')
+        _dimurl = _re("s='([^']*)").findall(_script)
+        for k, v in _re('(' + thumb_name + '[0-9]*)":"(http[^"]*)').findall(_script):
+            v = v.replace(r'\u003d', '=')
+            v = v.replace(r'\u0026', '&')
            ret_val[k] = v
    logger.debug("found %s imgdata for: %s", thumb_name, ret_val.keys())
    return ret_val


 def scrap_out_thumbs(dom):
-    """Scrap out thumbnail data from <script> tags.
-    """
+    """Scrap out thumbnail data from <script> tags."""
    ret_val = {}
    thumb_name = 'dimg_'

@ -96,7 +94,7 @@ def scrap_out_thumbs(dom):
        _script = script.text

        # var s='data:image/jpeg;base64, ...'
-        _imgdata = _re("s='([^']*)").findall( _script)
+        _imgdata = _re("s='([^']*)").findall(_script)
        if not _imgdata:
            continue

@ -112,19 +110,24 @@ def scrap_out_thumbs(dom):
 def request(query, params):
    """Google-Video search request"""

-    lang_info = get_lang_info(
-        params, supported_languages, language_aliases, False
-    )
-    logger.debug(
-        "HTTP header Accept-Language --> %s", lang_info['headers']['Accept-Language'])
+    lang_info = get_lang_info(params, supported_languages, language_aliases, False)
+    logger.debug("HTTP header Accept-Language --> %s", lang_info['headers']['Accept-Language'])

-    query_url = 'https://' + lang_info['subdomain'] + '/search' + "?" + urlencode({
+    query_url = (
+        'https://'
+        + lang_info['subdomain']
+        + '/search'
+        + "?"
+        + urlencode(
+            {
                'q': query,
                'tbm': "vid",
                **lang_info['params'],
                'ie': "utf8",
                'oe': "utf8",
-    })
+            }
+        )
+    )

    if params['time_range'] in time_range_dict:
        query_url += '&' + urlencode({'tbs': 'qdr:' + time_range_dict[params['time_range']]})
@ -133,9 +136,7 @@ def request(query, params):
    params['url'] = query_url

    params['headers'].update(lang_info['headers'])
-    params['headers']['Accept'] = (
-        'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
-        )
+    params['headers']['Accept'] = 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8'
    return params


@ -171,13 +172,13 @@ def response(resp):

        title = extract_text(eval_xpath_getindex(result, title_xpath, 0))
        url = eval_xpath_getindex(result, './/div[@class="dXiKIc"]//a/@href', 0)
-        length = extract_text(eval_xpath(
-            result, './/div[contains(@class, "P7xzyf")]/span/span'))
+        length = extract_text(eval_xpath(result, './/div[contains(@class, "P7xzyf")]/span/span'))
        c_node = eval_xpath_getindex(result, './/div[@class="Uroaid"]', 0)
        content = extract_text(c_node)
        pub_info = extract_text(eval_xpath(result, './/div[@class="Zg1NU"]'))

-        results.append({
+        results.append(
+            {
                'url': url,
                'title': title,
                'content': content,
@ -185,7 +186,8 @@ def response(resp):
                'author': pub_info,
                'thumbnail': img_src,
                'template': 'videos.html',
-            })
+            }
+        )

    # parse suggestion
    for suggestion in eval_xpath_list(dom, suggestion_xpath):
--- a/searx/engines/imdb.py
+++ b/searx/engines/imdb.py
@ -27,7 +27,9 @@ about = {
    "results": 'HTML',
 }

-categories = ['general', ]
+categories = [
+    'general',
+]
 paging = False

 # suggestion_url = "https://sg.media-imdb.com/suggestion/{letter}/{query}.json"
@ -35,13 +37,7 @@ suggestion_url = "https://v2.sg.media-imdb.com/suggestion/{letter}/{query}.json"

 href_base = 'https://imdb.com/{category}/{entry_id}'

-search_categories = {
-    "nm": "name",
-    "tt": "title",
-    "kw": "keyword",
-    "co": "company",
-    "ep": "episode"
-}
+search_categories = {"nm": "name", "tt": "title", "kw": "keyword", "co": "company", "ep": "episode"}


 def request(query, params):
@ -63,9 +59,7 @@ def response(resp):
        entry_id = entry['id']
        categ = search_categories.get(entry_id[:2])
        if categ is None:
-            logger.error(
-                'skip unknown category tag %s in %s', entry_id[:2], entry_id
-            )
+            logger.error('skip unknown category tag %s in %s', entry_id[:2], entry_id)
            continue

        title = entry['l']
@ -95,11 +89,13 @@ def response(resp):
            if not image_url_name.endswith('_V1_'):
                magic = '_V1_' + magic
            image_url = image_url_name + magic + '.' + image_url_prefix
-        results.append({
+        results.append(
+            {
                "title": title,
                "url": href_base.format(category=categ, entry_id=entry_id),
                "content": content,
-            "img_src" : image_url,
-        })
+                "img_src": image_url,
+            }
+        )

    return results
--- a/searx/engines/ina.py
+++ b/searx/engines/ina.py
@ -41,9 +41,7 @@ content_xpath = './/p[@class="media-body__summary"]'

 # do search-request
 def request(query, params):
-    params['url'] = search_url.format(ps=page_size,
-                                      start=params['pageno'] * page_size,
-                                      query=urlencode({'q': query}))
+    params['url'] = search_url.format(ps=page_size, start=params['pageno'] * page_size, query=urlencode({'q': query}))

    return params

@ -75,12 +73,16 @@ def response(resp):
        content = extract_text(result.xpath(content_xpath))

        # append result
-        results.append({'url': url,
+        results.append(
+            {
+                'url': url,
                'title': title,
                'content': content,
                'template': 'videos.html',
                'publishedDate': publishedDate,
-                        'thumbnail': thumbnail})
+                'thumbnail': thumbnail,
+            }
+        )

    # return results
    return results
--- a/searx/engines/invidious.py
+++ b/searx/engines/invidious.py
@ -46,14 +46,10 @@ def request(query, params):
        base_url_rand = base_url

    search_url = base_url_rand + "api/v1/search?q={query}"
-    params["url"] = search_url.format(
-        query=quote_plus(query)
-    ) + "&page={pageno}".format(pageno=params["pageno"])
+    params["url"] = search_url.format(query=quote_plus(query)) + "&page={pageno}".format(pageno=params["pageno"])

    if params["time_range"] in time_range_dict:
-        params["url"] += "&date={timerange}".format(
-            timerange=time_range_dict[params["time_range"]]
-        )
+        params["url"] += "&date={timerange}".format(timerange=time_range_dict[params["time_range"]])

    if params["language"] != "all":
        lang = params["language"].split("-")
@ -88,17 +84,13 @@ def response(resp):
            url = base_invidious_url + videoid
            embedded = embedded_url.format(videoid=videoid)
            thumbs = result.get("videoThumbnails", [])
-            thumb = next(
-                (th for th in thumbs if th["quality"] == "sddefault"), None
-            )
+            thumb = next((th for th in thumbs if th["quality"] == "sddefault"), None)
            if thumb:
                thumbnail = thumb.get("url", "")
            else:
                thumbnail = ""

-            publishedDate = parser.parse(
-                time.ctime(result.get("published", 0))
-            )
+            publishedDate = parser.parse(time.ctime(result.get("published", 0)))
            length = time.gmtime(result.get("lengthSeconds"))
            if length.tm_hour:
                length = time.strftime("%H:%M:%S", length)
--- a/searx/engines/json_engine.py
+++ b/searx/engines/json_engine.py
@ -119,22 +119,22 @@ def response(resp):
                content = query(result, content_query)[0]
            except:
                content = ""
-            results.append({
+            results.append(
+                {
                    'url': to_string(url),
                    'title': title_filter(to_string(title)),
                    'content': content_filter(to_string(content)),
-            })
+                }
+            )
    else:
-        for url, title, content in zip(
-            query(json, url_query),
-            query(json, title_query),
-            query(json, content_query)
-        ):
-            results.append({
+        for url, title, content in zip(query(json, url_query), query(json, title_query), query(json, content_query)):
+            results.append(
+                {
                    'url': to_string(url),
                    'title': title_filter(to_string(title)),
                    'content': content_filter(to_string(content)),
-            })
+                }
+            )

    if not suggestion_query:
        return results
--- a/searx/engines/kickass.py
+++ b/searx/engines/kickass.py
@ -34,8 +34,7 @@ content_xpath = './/span[@class="font11px lightgrey block"]'

 # do search-request
 def request(query, params):
-    params['url'] = search_url.format(search_term=quote(query),
-                                      pageno=params['pageno'])
+    params['url'] = search_url.format(search_term=quote(query), pageno=params['pageno'])

    return params

@ -79,7 +78,9 @@ def response(resp):
        torrentfileurl = quote(torrentfile, safe="%/:=&?~#+!$,;'@()*")

        # append result
-        results.append({'url': href,
+        results.append(
+            {
+                'url': href,
                'title': title,
                'content': content,
                'seed': seed,
@ -88,7 +89,9 @@ def response(resp):
                'files': files,
                'magnetlink': magnetlink,
                'torrentfile': torrentfileurl,
-                        'template': 'torrent.html'})
+                'template': 'torrent.html',
+            }
+        )

    # return results sorted by seeder
    return sorted(results, key=itemgetter('seed'), reverse=True)
--- a/searx/engines/loc.py
+++ b/searx/engines/loc.py
@ -34,9 +34,7 @@ IMG_SRC_FIXES = {

 def request(query, params):

-    search_path = search_string.format(
-        query=urlencode({'q': query}),
-        page=params['pageno'])
+    search_path = search_string.format(query=urlencode({'q': query}), page=params['pageno'])

    params['url'] = base_url + search_path

@ -56,13 +54,15 @@ def response(resp):
                break
        else:
            img_src = result['image']['thumb']
-        results.append({
+        results.append(
+            {
                'url': result['links']['item'],
                'title': result['title'],
                'img_src': img_src,
                'thumbnail_src': result['image']['thumb'],
                'author': result['creator'],
-            'template': 'images.html'
-        })
+                'template': 'images.html',
+            }
+        )

    return results
--- a/searx/engines/mediathekviewweb.py
+++ b/searx/engines/mediathekviewweb.py
@ -22,29 +22,33 @@ paging = True
 time_range_support = False
 safesearch = False

+
 def request(query, params):

    params['url'] = 'https://mediathekviewweb.de/api/query'
    params['method'] = 'POST'
    params['headers']['Content-type'] = 'text/plain'
-    params['data'] = dumps({
-        'queries' : [
+    params['data'] = dumps(
        {
-	        'fields' : [
+            'queries': [
+                {
+                    'fields': [
                        'title',
                        'topic',
                    ],
-	    'query' : query
+                    'query': query,
                },
            ],
-        'sortBy' : 'timestamp',
-        'sortOrder' : 'desc',
-        'future' : True,
-        'offset' : (params['pageno'] - 1 )* 10,
-        'size' : 10
-    })
+            'sortBy': 'timestamp',
+            'sortOrder': 'desc',
+            'future': True,
+            'offset': (params['pageno'] - 1) * 10,
+            'size': 10,
+        }
+    )
    return params

+
 def response(resp):

    resp = loads(resp.text)
@ -58,11 +62,13 @@ def response(resp):

        item['hms'] = str(datetime.timedelta(seconds=item['duration']))

-        results.append({
-            'url' : item['url_video_hd'],
-            'title' : "%(channel)s: %(title)s (%(hms)s)" % item,
-            'length' : item['hms'],
-            'content' : "%(description)s" % item,
-        })
+        results.append(
+            {
+                'url': item['url_video_hd'],
+                'title': "%(channel)s: %(title)s (%(hms)s)" % item,
+                'length': item['hms'],
+                'content': "%(description)s" % item,
+            }
+        )

    return results
--- a/searx/engines/mediawiki.py
+++ b/searx/engines/mediawiki.py
@ -25,23 +25,24 @@ search_type = 'nearmatch'  # possible values: title, text, nearmatch

 # search-url
 base_url = 'https://{language}.wikipedia.org/'
-search_postfix = 'w/api.php?action=query'\
-    '&list=search'\
-    '&{query}'\
-    '&format=json'\
-    '&sroffset={offset}'\
-    '&srlimit={limit}'\
+search_postfix = (
+    'w/api.php?action=query'
+    '&list=search'
+    '&{query}'
+    '&format=json'
+    '&sroffset={offset}'
+    '&srlimit={limit}'
    '&srwhat={searchtype}'
+)


 # do search-request
 def request(query, params):
    offset = (params['pageno'] - 1) * number_of_results

-    string_args = dict(query=urlencode({'srsearch': query}),
-                       offset=offset,
-                       limit=number_of_results,
-                       searchtype=search_type)
+    string_args = dict(
+        query=urlencode({'srsearch': query}), offset=offset, limit=number_of_results, searchtype=search_type
+    )

    format_strings = list(Formatter().parse(base_url))

@ -78,13 +79,14 @@ def response(resp):
    for result in search_results['query']['search']:
        if result.get('snippet', '').startswith('#REDIRECT'):
            continue
-        url = base_url.format(language=resp.search_params['language']) +\
-            'wiki/' + quote(result['title'].replace(' ', '_').encode())
+        url = (
+            base_url.format(language=resp.search_params['language'])
+            + 'wiki/'
+            + quote(result['title'].replace(' ', '_').encode())
+        )

        # append result
-        results.append({'url': url,
-                        'title': result['title'],
-                        'content': ''})
+        results.append({'url': url, 'title': result['title'], 'content': ''})

    # return results
    return results
--- a/searx/engines/microsoft_academic.py
+++ b/searx/engines/microsoft_academic.py
@ -26,7 +26,8 @@ def request(query, params):
    params['url'] = search_url
    params['method'] = 'POST'
    params['headers']['content-type'] = 'application/json; charset=utf-8'
-    params['data'] = dumps({
+    params['data'] = dumps(
+        {
            'query': query,
            'queryExpression': '',
            'filters': [],
@ -36,7 +37,8 @@ def request(query, params):
            'take': 10,
            'includeCitationContexts': False,
            'profileId': '',
-    })
+        }
+    )

    return params

@ -54,11 +56,13 @@ def response(resp):
        title = result['paper']['dn']
        content = _get_content(result['paper'])
        url = _paper_url.format(id=result['paper']['id'])
-        results.append({
+        results.append(
+            {
                'url': url,
                'title': html_to_text(title),
                'content': html_to_text(content),
-        })
+            }
+        )

    return results

--- a/searx/engines/mixcloud.py
+++ b/searx/engines/mixcloud.py
@ -25,16 +25,17 @@ paging = True
 url = 'https://api.mixcloud.com/'
 search_url = url + 'search/?{query}&type=cloudcast&limit=10&offset={offset}'

-embedded_url = '<iframe scrolling="no" frameborder="0" allowTransparency="true" ' +\
-    'data-src="https://www.mixcloud.com/widget/iframe/?feed={url}" width="300" height="300"></iframe>'
+embedded_url = (
+    '<iframe scrolling="no" frameborder="0" allowTransparency="true" '
+    + 'data-src="https://www.mixcloud.com/widget/iframe/?feed={url}" width="300" height="300"></iframe>'
+)


 # do search-request
 def request(query, params):
    offset = (params['pageno'] - 1) * 10

-    params['url'] = search_url.format(query=urlencode({'q': query}),
-                                      offset=offset)
+    params['url'] = search_url.format(query=urlencode({'q': query}), offset=offset)

    return params

@ -54,11 +55,9 @@ def response(resp):
        publishedDate = parser.parse(result['created_time'])

        # append result
-        results.append({'url': url,
-                        'title': title,
-                        'embedded': embedded,
-                        'publishedDate': publishedDate,
-                        'content': content})
+        results.append(
+            {'url': url, 'title': title, 'embedded': embedded, 'publishedDate': publishedDate, 'content': content}
+        )

    # return results
    return results
--- a/searx/engines/mongodb.py
+++ b/searx/engines/mongodb.py
@ -26,38 +26,35 @@ result_template = 'key-value.html'

 _client = None

+
 def init(_):
    connect()

+
 def connect():
    global _client  # pylint: disable=global-statement
-    kwargs = { 'port': port }
+    kwargs = {'port': port}
    if username:
        kwargs['username'] = username
    if password:
        kwargs['password'] = password
    _client = MongoClient(host, **kwargs)[database][collection]

+
 def search(query, params):
    results = []
    if exact_match_only:
-        q = { '$eq': query }
+        q = {'$eq': query}
    else:
-        _re = re.compile('.*{0}.*'.format(re.escape(query)), re.I | re.M )
-        q = { '$regex': _re }
+        _re = re.compile('.*{0}.*'.format(re.escape(query)), re.I | re.M)
+        q = {'$regex': _re}

-    query = _client.find(
-        {key: q}
-    ).skip(
-        ( params['pageno'] -1 ) * results_per_page
-    ).limit(
-        results_per_page
-    )
+    query = _client.find({key: q}).skip((params['pageno'] - 1) * results_per_page).limit(results_per_page)

-    results.append({ 'number_of_results': query.count() })
+    results.append({'number_of_results': query.count()})
    for r in query:
        del r['_id']
-        r = { str(k):str(v) for k,v in r.items() }
+        r = {str(k): str(v) for k, v in r.items()}
        r['template'] = result_template
        results.append(r)

--- a/searx/engines/mysql_server.py
+++ b/searx/engines/mysql_server.py
@ -20,6 +20,7 @@ paging = True
 result_template = 'key-value.html'
 _connection = None

+
 def init(engine_settings):
    global _connection  # pylint: disable=global-statement

@ -30,13 +31,14 @@ def init(engine_settings):
        raise ValueError('only SELECT query is supported')

    _connection = mysql.connector.connect(
-        database = database,
-        user = username,
-        password = password,
-        host = host,
+        database=database,
+        user=username,
+        password=password,
+        host=host,
        auth_plugin=auth_plugin,
    )

+
 def search(query, params):
    query_params = {'query': query}
    query_to_run = query_str + ' LIMIT {0} OFFSET {1}'.format(limit, (params['pageno'] - 1) * limit)
@ -46,6 +48,7 @@ def search(query, params):

        return _fetch_results(cur)

+
 def _fetch_results(cur):
    results = []
    for res in cur:
--- a/searx/engines/nyaa.py
+++ b/searx/engines/nyaa.py
@ -98,7 +98,9 @@ def response(resp):
        content = 'Category: "{category}". Downloaded {downloads} times.'
        content = content.format(category=category, downloads=downloads)

-        results.append({'url': href,
+        results.append(
+            {
+                'url': href,
                'title': title,
                'content': content,
                'seed': seed,
@ -106,6 +108,8 @@ def response(resp):
                'filesize': filesize,
                'torrentfile': torrent_link,
                'magnetlink': magnet_link,
-                        'template': 'torrent.html'})
+                'template': 'torrent.html',
+            }
+        )

    return results
--- a/searx/engines/openstreetmap.py
+++ b/searx/engines/openstreetmap.py
@ -151,10 +151,12 @@ def response(resp):
    user_language = resp.search_params['language']

    if resp.search_params['route']:
-        results.append({
+        results.append(
+            {
                'answer': gettext('Get directions'),
                'url': route_url.format(*resp.search_params['route'].groups()),
-            })
+            }
+        )

    fetch_wikidata(nominatim_json, user_language)

@ -170,7 +172,8 @@ def response(resp):
        links, link_keys = get_links(result, user_language)
        data = get_data(result, user_language, link_keys)

-        results.append({
+        results.append(
+            {
                'template': 'map.html',
                'title': title,
                'address': address,
@ -181,15 +184,14 @@ def response(resp):
                'img_src': img_src,
                'links': links,
                'data': data,
-            'type': get_tag_label(
-                result.get('category'), result.get('type', ''), user_language
-            ),
+                'type': get_tag_label(result.get('category'), result.get('type', ''), user_language),
                'type_icon': result.get('icon'),
                'content': '',
                'longitude': result['lon'],
                'latitude': result['lat'],
                'boundingbox': result['boundingbox'],
-        })
+            }
+        )

    return results

@ -297,8 +299,7 @@ def get_title_address(result):


 def get_url_osm_geojson(result):
-    """Get url, osm and geojson
-    """
+    """Get url, osm and geojson"""
    osm_type = result.get('osm_type', result.get('type'))
    if 'osm_id' not in result:
        # see https://github.com/osm-search/Nominatim/issues/1521
@ -349,11 +350,13 @@ def get_links(result, user_language):
            url, url_label = mapping_function(raw_value)
            if url.startswith('https://wikidata.org'):
                url_label = result.get('wikidata', {}).get('itemLabel') or url_label
-            links.append({
+            links.append(
+                {
                    'label': get_key_label(k, user_language),
                    'url': url,
                    'url_label': url_label,
-            })
+                }
+            )
            link_keys.add(k)
    return links, link_keys

@ -373,11 +376,13 @@ def get_data(result, user_language, ignore_keys):
            continue
        k_label = get_key_label(k, user_language)
        if k_label:
-            data.append({
+            data.append(
+                {
                    'label': k_label,
                    'key': k,
                    'value': v,
-            })
+                }
+            )
    data.sort(key=lambda entry: (get_key_rank(entry['key']), entry['label']))
    return data

--- a/searx/engines/pdbe.py
+++ b/searx/engines/pdbe.py
@ -34,10 +34,7 @@ def request(query, params):

    params['url'] = pdbe_solr_url
    params['method'] = 'POST'
-    params['data'] = {
-        'q': query,
-        'wt': "json"  # request response in parsable format
-    }
+    params['data'] = {'q': query, 'wt': "json"}  # request response in parsable format
    return params


@ -53,12 +50,21 @@ def construct_body(result):
        if result['journal']:
            content = content.format(
                title=result['citation_title'],
-                authors=result['entry_author_list'][0], journal=result['journal'], volume=result['journal_volume'],
-                page=result['journal_page'], year=result['citation_year'])
+                authors=result['entry_author_list'][0],
+                journal=result['journal'],
+                volume=result['journal_volume'],
+                page=result['journal_page'],
+                year=result['citation_year'],
+            )
        else:
            content = content.format(
                title=result['citation_title'],
-                authors=result['entry_author_list'][0], journal='', volume='', page='', year=result['release_year'])
+                authors=result['entry_author_list'][0],
+                journal='',
+                volume='',
+                page='',
+                year=result['release_year'],
+            )
        img_src = pdbe_preview_url.format(pdb_id=result['pdb_id'])
    except (KeyError):
        content = None
@ -96,20 +102,21 @@ def response(resp):
            # since we can't construct a proper body from the response, we'll make up our own
            msg_superseded = gettext("This entry has been superseded by")
            content = '{msg_superseded}: {url} ({pdb_id})'.format(
-                msg_superseded=msg_superseded,
-                url=superseded_url,
-                pdb_id=result['superseded_by'])
+                msg_superseded=msg_superseded, url=superseded_url, pdb_id=result['superseded_by']
+            )

            # obsoleted entries don't have preview images
            img_src = None
        else:
            title, content, img_src = construct_body(result)

-        results.append({
+        results.append(
+            {
                'url': pdbe_entry_url.format(pdb_id=result['pdb_id']),
                'title': title,
                'content': content,
-            'img_src': img_src
-        })
+                'img_src': img_src,
+            }
+        )

    return results
--- a/searx/engines/peertube.py
+++ b/searx/engines/peertube.py
@ -36,9 +36,7 @@ def request(query, params):
    language = params["language"].split("-")[0]
    if "all" != language and language in supported_languages:
        query_dict["languageOneOf"] = language
-    params["url"] = search_url.format(
-        query=urlencode(query_dict), pageno=pageno
-    )
+    params["url"] = search_url.format(query=urlencode(query_dict), pageno=pageno)
    return params


--- a/searx/engines/photon.py
+++ b/searx/engines/photon.py
@ -33,9 +33,7 @@ supported_languages = ['de', 'en', 'fr', 'it']

 # do search-request
 def request(query, params):
-    params['url'] = base_url +\
-        search_string.format(query=urlencode({'q': query}),
-                             limit=number_of_results)
+    params['url'] = base_url + search_string.format(query=urlencode({'q': query}), limit=number_of_results)

    if params['language'] != 'all':
        language = params['language'].split('_')[0]
@ -75,50 +73,60 @@ def response(resp):
            # continue if invalide osm-type
            continue

-        url = result_base_url.format(osm_type=osm_type,
-                                     osm_id=properties.get('osm_id'))
+        url = result_base_url.format(osm_type=osm_type, osm_id=properties.get('osm_id'))

-        osm = {'type': osm_type,
-               'id': properties.get('osm_id')}
+        osm = {'type': osm_type, 'id': properties.get('osm_id')}

        geojson = r.get('geometry')

        if properties.get('extent'):
-            boundingbox = [properties.get('extent')[3],
+            boundingbox = [
+                properties.get('extent')[3],
                properties.get('extent')[1],
                properties.get('extent')[0],
-                           properties.get('extent')[2]]
+                properties.get('extent')[2],
+            ]
        else:
            # TODO: better boundingbox calculation
-            boundingbox = [geojson['coordinates'][1],
+            boundingbox = [
+                geojson['coordinates'][1],
                geojson['coordinates'][1],
                geojson['coordinates'][0],
-                           geojson['coordinates'][0]]
+                geojson['coordinates'][0],
+            ]

        # address calculation
        address = {}

        # get name
-        if properties.get('osm_key') == 'amenity' or\
-           properties.get('osm_key') == 'shop' or\
-           properties.get('osm_key') == 'tourism' or\
-           properties.get('osm_key') == 'leisure':
+        if (
+            properties.get('osm_key') == 'amenity'
+            or properties.get('osm_key') == 'shop'
+            or properties.get('osm_key') == 'tourism'
+            or properties.get('osm_key') == 'leisure'
+        ):
            address = {'name': properties.get('name')}

        # add rest of adressdata, if something is already found
        if address.get('name'):
-            address.update({'house_number': properties.get('housenumber'),
+            address.update(
+                {
+                    'house_number': properties.get('housenumber'),
                    'road': properties.get('street'),
-                           'locality': properties.get('city',
-                                       properties.get('town',           # noqa
-                                       properties.get('village'))),     # noqa
+                    'locality': properties.get(
+                        'city', properties.get('town', properties.get('village'))  # noqa
+                    ),  # noqa
                    'postcode': properties.get('postcode'),
-                           'country': properties.get('country')})
+                    'country': properties.get('country'),
+                }
+            )
        else:
            address = None

        # append result
-        results.append({'template': 'map.html',
+        results.append(
+            {
+                'template': 'map.html',
                'title': title,
                'content': '',
                'longitude': geojson['coordinates'][0],
@ -127,7 +135,9 @@ def response(resp):
                'geojson': geojson,
                'address': address,
                'osm': osm,
-                        'url': url})
+                'url': url,
+            }
+        )

    # return results
    return results
--- a/searx/engines/piratebay.py
+++ b/searx/engines/piratebay.py
@ -40,17 +40,14 @@ trackers = [
 ]

 # piratebay specific type-definitions
-search_types = {"files": "0",
-                "music": "100",
-                "videos": "200"}
+search_types = {"files": "0", "music": "100", "videos": "200"}


 # do search-request
 def request(query, params):
    search_type = search_types.get(params["category"], "0")

-    params["url"] = search_url.format(search_term=quote(query),
-                                      search_type=search_type)
+    params["url"] = search_url.format(search_term=quote(query), search_type=search_type)

    return params

@ -68,8 +65,9 @@ def response(resp):
    # parse results
    for result in search_res:
        link = url + "description.php?id=" + result["id"]
-        magnetlink = "magnet:?xt=urn:btih:" + result["info_hash"] + "&dn=" + result["name"]\
-                     + "&tr=" + "&tr=".join(trackers)
+        magnetlink = (
+            "magnet:?xt=urn:btih:" + result["info_hash"] + "&dn=" + result["name"] + "&tr=" + "&tr=".join(trackers)
+        )

        params = {
            "url": link,
@ -77,7 +75,7 @@ def response(resp):
            "seed": result["seeders"],
            "leech": result["leechers"],
            "magnetlink": magnetlink,
-            "template": "torrent.html"
+            "template": "torrent.html",
        }

        # extract and convert creation date
--- a/searx/engines/postgresql.py
+++ b/searx/engines/postgresql.py
@ -20,6 +20,7 @@ paging = True
 result_template = 'key-value.html'
 _connection = None

+
 def init(engine_settings):
    global _connection  # pylint: disable=global-statement

@ -30,25 +31,24 @@ def init(engine_settings):
        raise ValueError('only SELECT query is supported')

    _connection = psycopg2.connect(
-        database = database,
-        user = username,
-        password = password,
-        host = host,
-        port = port,
+        database=database,
+        user=username,
+        password=password,
+        host=host,
+        port=port,
    )

+
 def search(query, params):
    query_params = {'query': query}
-    query_to_run = (
-        query_str
-        + ' LIMIT {0} OFFSET {1}'.format(limit, (params['pageno'] - 1) * limit)
-    )
+    query_to_run = query_str + ' LIMIT {0} OFFSET {1}'.format(limit, (params['pageno'] - 1) * limit)

    with _connection:
        with _connection.cursor() as cur:
            cur.execute(query_to_run, query_params)
            return _fetch_results(cur)

+
 def _fetch_results(cur):
    results = []
    titles = []
--- a/searx/engines/pubmed.py
+++ b/searx/engines/pubmed.py
@ -15,7 +15,7 @@ about = {
    "wikidata_id": 'Q1540899',
    "official_api_documentation": {
        'url': 'https://www.ncbi.nlm.nih.gov/home/develop/api/',
-        'comment': 'More info on api: https://www.ncbi.nlm.nih.gov/books/NBK25501/'
+        'comment': 'More info on api: https://www.ncbi.nlm.nih.gov/books/NBK25501/',
    },
    "use_official_api": True,
    "require_api_key": False,
@ -24,8 +24,9 @@ about = {

 categories = ['science']

-base_url = 'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi'\
-           + '?db=pubmed&{query}&retstart={offset}&retmax={hits}'
+base_url = (
+    'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi' + '?db=pubmed&{query}&retstart={offset}&retmax={hits}'
+)

 # engine dependent config
 number_of_results = 10
@ -36,9 +37,7 @@ def request(query, params):
    # basic search
    offset = (params['pageno'] - 1) * number_of_results

-    string_args = dict(query=urlencode({'term': query}),
-                       offset=offset,
-                       hits=number_of_results)
+    string_args = dict(query=urlencode({'term': query}), offset=offset, hits=number_of_results)

    params['url'] = base_url.format(**string_args)

@ -49,8 +48,9 @@ def response(resp):
    results = []

    # First retrieve notice of each result
-    pubmed_retrieve_api_url = 'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?'\
-                              + 'db=pubmed&retmode=xml&id={pmids_string}'
+    pubmed_retrieve_api_url = (
+        'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?' + 'db=pubmed&retmode=xml&id={pmids_string}'
+    )

    pmids_results = etree.XML(resp.content)
    pmids = pmids_results.xpath('//eSearchResult/IdList/Id')
@ -88,14 +88,17 @@ def response(resp):
            content = content[0:300] + "..."
        # TODO: center snippet on query term

-        res_dict = {'url': url,
-                    'title': title,
-                    'content': content}
+        res_dict = {'url': url, 'title': title, 'content': content}

        try:
-            publishedDate = datetime.strptime(entry.xpath('.//DateCreated/Year')[0].text
-                                              + '-' + entry.xpath('.//DateCreated/Month')[0].text
-                                              + '-' + entry.xpath('.//DateCreated/Day')[0].text, '%Y-%m-%d')
+            publishedDate = datetime.strptime(
+                entry.xpath('.//DateCreated/Year')[0].text
+                + '-'
+                + entry.xpath('.//DateCreated/Month')[0].text
+                + '-'
+                + entry.xpath('.//DateCreated/Day')[0].text,
+                '%Y-%m-%d',
+            )
            res_dict['publishedDate'] = publishedDate
        except:
            pass
--- a/searx/engines/qwant.py
+++ b/searx/engines/qwant.py
@ -61,6 +61,7 @@ category_to_keyword = {
 # search-url
 url = 'https://api.qwant.com/v3/search/{keyword}?{query}&count={count}&offset={offset}'

+
 def request(query, params):
    """Qwant search request"""
    keyword = category_to_keyword[categories[0]]
@ -77,10 +78,10 @@ def request(query, params):
        offset = min(offset, 40)

    params['url'] = url.format(
-        keyword = keyword,
-        query = urlencode({'q': query}),
-        offset = offset,
-        count = count,
+        keyword=keyword,
+        query=urlencode({'q': query}),
+        offset=offset,
+        count=count,
    )

    # add language tag
@ -111,7 +112,14 @@ def response(resp):

    # check for an API error
    if search_results.get('status') != 'success':
-        msg = ",".join(data.get('message', ['unknown', ]))
+        msg = ",".join(
+            data.get(
+                'message',
+                [
+                    'unknown',
+                ],
+            )
+        )
        raise SearxEngineAPIException('API error::' + msg)

    # raise for other errors
@ -128,7 +136,7 @@ def response(resp):
        # result['items'].
        mainline = data.get('result', {}).get('items', [])
        mainline = [
-            {'type' : keyword, 'items' : mainline },
+            {'type': keyword, 'items': mainline},
        ]

    # return empty array if there are no results
@ -153,11 +161,13 @@ def response(resp):

            if mainline_type == 'web':
                content = item['desc']
-                results.append({
+                results.append(
+                    {
                        'title': title,
                        'url': res_url,
                        'content': content,
-                })
+                    }
+                )

            elif mainline_type == 'news':

@ -168,23 +178,27 @@ def response(resp):
                img_src = None
                if news_media:
                    img_src = news_media[0].get('pict', {}).get('url', None)
-                results.append({
+                results.append(
+                    {
                        'title': title,
                        'url': res_url,
                        'publishedDate': pub_date,
                        'img_src': img_src,
-                })
+                    }
+                )

            elif mainline_type == 'images':
                thumbnail = item['thumbnail']
                img_src = item['media']
-                results.append({
+                results.append(
+                    {
                        'title': title,
                        'url': res_url,
                        'template': 'images.html',
                        'thumbnail_src': thumbnail,
                        'img_src': img_src,
-                })
+                    }
+                )

            elif mainline_type == 'videos':
                # some videos do not have a description: while qwant-video
@ -208,11 +222,9 @@ def response(resp):
                thumbnail = item['thumbnail']
                # from some locations (DE and others?) the s2 link do
                # response a 'Please wait ..' but does not deliver the thumbnail
-                thumbnail = thumbnail.replace(
-                    'https://s2.qwant.com',
-                    'https://s1.qwant.com', 1
-                )
-                results.append({
+                thumbnail = thumbnail.replace('https://s2.qwant.com', 'https://s1.qwant.com', 1)
+                results.append(
+                    {
                        'title': title,
                        'url': res_url,
                        'content': content,
@ -220,7 +232,8 @@ def response(resp):
                        'thumbnail': thumbnail,
                        'template': 'videos.html',
                        'length': length,
-            })
+                    }
+                )

    return results

@ -229,8 +242,8 @@ def response(resp):
 def _fetch_supported_languages(resp):
    # list of regions is embedded in page as a js object
    response_text = resp.text
-    response_text = response_text[response_text.find('INITIAL_PROPS'):]
-    response_text = response_text[response_text.find('{'):response_text.find('</script>')]
+    response_text = response_text[response_text.find('INITIAL_PROPS') :]
+    response_text = response_text[response_text.find('{') : response_text.find('</script>')]

    regions_json = loads(response_text)

--- a/searx/engines/recoll.py
+++ b/searx/engines/recoll.py
@ -28,18 +28,12 @@ mount_prefix = None
 dl_prefix = None

 # embedded
-embedded_url = '<{ttype} controls height="166px" ' +\
-    'src="{url}" type="{mtype}"></{ttype}>'
+embedded_url = '<{ttype} controls height="166px" ' + 'src="{url}" type="{mtype}"></{ttype}>'


 # helper functions
 def get_time_range(time_range):
-    sw = {
-        'day': 1,
-        'week': 7,
-        'month': 30,
-        'year': 365
-    }
+    sw = {'day': 1, 'week': 7, 'month': 30, 'year': 365}

    offset = sw.get(time_range, 0)
    if not offset:
@ -52,11 +46,9 @@ def get_time_range(time_range):
 def request(query, params):
    search_after = get_time_range(params['time_range'])
    search_url = base_url + 'json?{query}&highlight=0'
-    params['url'] = search_url.format(query=urlencode({
-        'query': query,
-        'page': params['pageno'],
-        'after': search_after,
-        'dir': search_dir}))
+    params['url'] = search_url.format(
+        query=urlencode({'query': query, 'page': params['pageno'], 'after': search_after, 'dir': search_dir})
+    )

    return params

@ -76,10 +68,7 @@ def response(resp):
        content = '{}'.format(result['snippet'])

        # append result
-        item = {'url': url,
-                'title': title,
-                'content': content,
-                'template': 'files.html'}
+        item = {'url': url, 'title': title, 'content': content, 'template': 'files.html'}

        if result['size']:
            item['size'] = int(result['size'])
@ -96,9 +85,8 @@ def response(resp):

            if mtype in ['audio', 'video']:
                item['embedded'] = embedded_url.format(
-                    ttype=mtype,
-                    url=quote(url.encode('utf8'), '/:'),
-                    mtype=result['mtype'])
+                    ttype=mtype, url=quote(url.encode('utf8'), '/:'), mtype=result['mtype']
+                )

            if mtype in ['image'] and subtype in ['bmp', 'gif', 'jpeg', 'png']:
                item['img_src'] = url
--- a/searx/engines/reddit.py
+++ b/searx/engines/reddit.py
@ -52,10 +52,7 @@ def response(resp):
        data = post['data']

        # extract post information
-        params = {
-            'url': urljoin(base_url, data['permalink']),
-            'title': data['title']
-        }
+        params = {'url': urljoin(base_url, data['permalink']), 'title': data['title']}

        # if thumbnail field contains a valid URL, we need to change template
        thumbnail = data['thumbnail']
--- a/searx/engines/redis_server.py
+++ b/searx/engines/redis_server.py
@ -20,16 +20,19 @@ result_template = 'key-value.html'
 exact_match_only = True

 _redis_client = None
+
+
 def init(_engine_settings):
    global _redis_client  # pylint: disable=global-statement
    _redis_client = redis.StrictRedis(
-        host = host,
-        port = port,
-        db = db,
-        password = password or None,
-        decode_responses = True,
+        host=host,
+        port=port,
+        db=db,
+        password=password or None,
+        decode_responses=True,
    )

+
 def search(query, _params):
    if not exact_match_only:
        return search_keys(query)
@ -42,21 +45,20 @@ def search(query, _params):
    if ' ' in query:
        qset, rest = query.split(' ', 1)
        ret = []
-        for res in _redis_client.hscan_iter(
-                qset, match='*{}*'.format(rest)
-        ):
-            ret.append({
+        for res in _redis_client.hscan_iter(qset, match='*{}*'.format(rest)):
+            ret.append(
+                {
                    res[0]: res[1],
                    'template': result_template,
-            })
+                }
+            )
        return ret
    return []

+
 def search_keys(query):
    ret = []
-    for key in _redis_client.scan_iter(
-            match='*{}*'.format(query)
-    ):
+    for key in _redis_client.scan_iter(match='*{}*'.format(query)):
        key_type = _redis_client.type(key)
        res = None

--- a/searx/engines/rumble.py
+++ b/searx/engines/rumble.py
@ -68,7 +68,8 @@ def response(resp):
        else:
            content = f"{views} views - {rumbles} rumbles"

-        results.append({
+        results.append(
+            {
                'url': url,
                'title': title,
                'content': content,
@ -77,5 +78,6 @@ def response(resp):
                'template': 'videos.html',
                'publishedDate': fixed_date,
                'thumbnail': thumbnail,
-        })
+            }
+        )
    return results
--- a/searx/engines/scanr_structures.py
+++ b/searx/engines/scanr_structures.py
@ -32,12 +32,16 @@ def request(query, params):
    params['url'] = search_url
    params['method'] = 'POST'
    params['headers']['Content-type'] = "application/json"
-    params['data'] = dumps({"query": query,
+    params['data'] = dumps(
+        {
+            "query": query,
            "searchField": "ALL",
            "sortDirection": "ASC",
            "sortOrder": "RELEVANCY",
            "page": params['pageno'],
-                            "pageSize": page_size})
+            "pageSize": page_size,
+        }
+    )

    return params

@ -69,11 +73,15 @@ def response(resp):
            content = result['highlights'][0]['value']

        # append result
-        results.append({'url': url + 'structure/' + result['id'],
+        results.append(
+            {
+                'url': url + 'structure/' + result['id'],
                'title': result['label'],
                # 'thumbnail': thumbnail,
                'img_src': thumbnail,
-                        'content': html_to_text(content)})
+                'content': html_to_text(content),
+            }
+        )

    # return results
    return results
--- a/searx/engines/searchcode_code.py
+++ b/searx/engines/searchcode_code.py
@ -25,10 +25,7 @@ url = 'https://searchcode.com/'
 search_url = url + 'api/codesearch_I/?{query}&p={pageno}'

 # special code-endings which are not recognised by the file ending
-code_endings = {'cs': 'c#',
-                'h': 'c',
-                'hpp': 'cpp',
-                'cxx': 'cpp'}
+code_endings = {'cs': 'c#', 'h': 'c', 'hpp': 'cpp', 'cxx': 'cpp'}


 # do search-request
@ -55,17 +52,21 @@ def response(resp):
            lines[int(line)] = code

        code_language = code_endings.get(
-            result['filename'].split('.')[-1].lower(),
-            result['filename'].split('.')[-1].lower())
+            result['filename'].split('.')[-1].lower(), result['filename'].split('.')[-1].lower()
+        )

        # append result
-        results.append({'url': href,
+        results.append(
+            {
+                'url': href,
                'title': title,
                'content': '',
                'repository': repo,
                'codelines': sorted(lines.items()),
                'code_language': code_language,
-                        'template': 'code.html'})
+                'template': 'code.html',
+            }
+        )

    # return results
    return results
--- a/searx/engines/searx_engine.py
+++ b/searx/engines/searx_engine.py
@ -37,7 +37,7 @@ def request(query, params):
        'language': params['language'],
        'time_range': params['time_range'],
        'category': params['category'],
-        'format': 'json'
+        'format': 'json',
    }

    return params
--- a/searx/engines/semantic_scholar.py
+++ b/searx/engines/semantic_scholar.py
@ -13,7 +13,8 @@ def request(query, params):
    params['url'] = search_url
    params['method'] = 'POST'
    params['headers']['content-type'] = 'application/json'
-    params['data'] = dumps({
+    params['data'] = dumps(
+        {
            "queryString": query,
            "page": params['pageno'],
            "pageSize": 10,
@ -25,7 +26,8 @@ def request(query, params):
            "coAuthors": [],
            "venues": [],
            "performTitleMatch": True,
-    })
+        }
+    )
    return params


@ -33,10 +35,12 @@ def response(resp):
    res = loads(resp.text)
    results = []
    for result in res['results']:
-        results.append({
+        results.append(
+            {
                'url': result['primaryPaperLink']['url'],
                'title': result['title']['text'],
-            'content': result['paperAbstractTruncated']
-        })
+                'content': result['paperAbstractTruncated'],
+            }
+        )

    return results
--- a/searx/engines/sepiasearch.py
+++ b/searx/engines/sepiasearch.py
@ -31,17 +31,13 @@ supported_languages = [
 ]
 base_url = 'https://sepiasearch.org/api/v1/search/videos'

-safesearch_table = {
-    0: 'both',
-    1: 'false',
-    2: 'false'
-}
+safesearch_table = {0: 'both', 1: 'false', 2: 'false'}

 time_range_table = {
    'day': relativedelta.relativedelta(),
    'week': relativedelta.relativedelta(weeks=-1),
    'month': relativedelta.relativedelta(months=-1),
-    'year': relativedelta.relativedelta(years=-1)
+    'year': relativedelta.relativedelta(years=-1),
 }


@ -55,13 +51,19 @@ def minute_to_hm(minute):


 def request(query, params):
-    params['url'] = base_url + '?' + urlencode({
+    params['url'] = (
+        base_url
+        + '?'
+        + urlencode(
+            {
                'search': query,
                'start': (params['pageno'] - 1) * 10,
                'count': 10,
                'sort': '-match',
-        'nsfw': safesearch_table[params['safesearch']]
-    })
+                'nsfw': safesearch_table[params['safesearch']],
+            }
+        )
+    )

    language = params['language'].split('-')[0]
    if language in supported_languages:
@ -91,7 +93,9 @@ def response(resp):
        length = minute_to_hm(result.get('duration'))
        url = result['url']

-        results.append({'url': url,
+        results.append(
+            {
+                'url': url,
                'title': title,
                'content': content,
                'author': author,
@ -99,6 +103,8 @@ def response(resp):
                'template': 'videos.html',
                'publishedDate': publishedDate,
                'embedded': embedded,
-                        'thumbnail': thumbnail})
+                'thumbnail': thumbnail,
+            }
+        )

    return results
--- a/searx/engines/seznam.py
+++ b/searx/engines/seznam.py
@ -58,10 +58,12 @@ def response(resp):
        if result_data is None:
            continue
        title_element = eval_xpath_getindex(result_element, './/h3/a', 0)
-        results.append({
+        results.append(
+            {
                'url': title_element.get('href'),
                'title': extract_text(title_element),
                'content': extract_text(eval_xpath(result_data, './/div[@class="_3eded7"]')),
-        })
+            }
+        )

    return results
--- a/searx/engines/sjp.py
+++ b/searx/engines/sjp.py
@ -28,9 +28,11 @@ URL = 'https://sjp.pwn.pl'
 SEARCH_URL = URL + '/szukaj/{query}.html'

 word_xpath = '//div[@class="query"]'
-dict_xpath = ['//div[@class="wyniki sjp-so-wyniki sjp-so-anchor"]',
+dict_xpath = [
+    '//div[@class="wyniki sjp-so-wyniki sjp-so-anchor"]',
    '//div[@class="wyniki sjp-wyniki sjp-anchor"]',
-              '//div[@class="wyniki sjp-doroszewski-wyniki sjp-doroszewski-anchor"]']
+    '//div[@class="wyniki sjp-doroszewski-wyniki sjp-doroszewski-anchor"]',
+]


 def request(query, params):
@ -85,9 +87,11 @@ def response(resp):
                infobox += "</ol>"
        infobox += "</ul></div>"

-    results.append({
+    results.append(
+        {
            'infobox': word,
            'content': infobox,
-    })
+        }
+    )

    return results
--- a/searx/engines/solidtorrents.py
+++ b/searx/engines/solidtorrents.py
@ -36,7 +36,8 @@ def response(resp):
    search_results = loads(resp.text)

    for result in search_results["results"]:
-        results.append({
+        results.append(
+            {
                'infohash': result["infohash"],
                'seed': result["swarm"]["seeders"],
                'leech': result["swarm"]["leechers"],
@ -45,5 +46,6 @@ def response(resp):
                'filesize': result["size"],
                'magnetlink': result["magnet"],
                'template': "torrent.html",
-        })
+            }
+        )
    return results
--- a/searx/engines/soundcloud.py
+++ b/searx/engines/soundcloud.py
@ -27,17 +27,21 @@ paging = True
 # search-url
 # missing attribute: user_id, app_version, app_locale
 url = 'https://api-v2.soundcloud.com/'
-search_url = url + 'search?{query}'\
-                         '&variant_ids='\
-                         '&facet=model'\
-                         '&limit=20'\
-                         '&offset={offset}'\
-                         '&linked_partitioning=1'\
-                         '&client_id={client_id}'   # noqa
+search_url = (
+    url + 'search?{query}'
+    '&variant_ids='
+    '&facet=model'
+    '&limit=20'
+    '&offset={offset}'
+    '&linked_partitioning=1'
+    '&client_id={client_id}'
+)  # noqa

-embedded_url = '<iframe width="100%" height="166" ' +\
-    'scrolling="no" frameborder="no" ' +\
-    'data-src="https://w.soundcloud.com/player/?url={uri}"></iframe>'
+embedded_url = (
+    '<iframe width="100%" height="166" '
+    + 'scrolling="no" frameborder="no" '
+    + 'data-src="https://w.soundcloud.com/player/?url={uri}"></iframe>'
+)

 cid_re = re.compile(r'client_id:"([^"]*)"', re.I | re.U)
 guest_client_id = ''
@ -75,9 +79,7 @@ def init(engine_settings=None):
 def request(query, params):
    offset = (params['pageno'] - 1) * 20

-    params['url'] = search_url.format(query=urlencode({'q': query}),
-                                      offset=offset,
-                                      client_id=guest_client_id)
+    params['url'] = search_url.format(query=urlencode({'q': query}), offset=offset, client_id=guest_client_id)

    return params

@ -98,11 +100,15 @@ def response(resp):
            embedded = embedded_url.format(uri=uri)

            # append result
-            results.append({'url': result['permalink_url'],
+            results.append(
+                {
+                    'url': result['permalink_url'],
                    'title': title,
                    'publishedDate': publishedDate,
                    'embedded': embedded,
-                            'content': content})
+                    'content': content,
+                }
+            )

    # return results
    return results
--- a/searx/engines/spotify.py
+++ b/searx/engines/spotify.py
@ -42,9 +42,10 @@ def request(query, params):
    r = http_post(
        'https://accounts.spotify.com/api/token',
        data={'grant_type': 'client_credentials'},
-        headers={'Authorization': 'Basic ' + base64.b64encode(
-            "{}:{}".format(api_client_id, api_client_secret).encode()
-        ).decode()}
+        headers={
+            'Authorization': 'Basic '
+            + base64.b64encode("{}:{}".format(api_client_id, api_client_secret).encode()).decode()
+        },
    )
    j = loads(r.text)
    params['headers'] = {'Authorization': 'Bearer {}'.format(j.get('access_token'))}
@ -63,18 +64,12 @@ def response(resp):
        if result['type'] == 'track':
            title = result['name']
            url = result['external_urls']['spotify']
-            content = '{} - {} - {}'.format(
-                result['artists'][0]['name'],
-                result['album']['name'],
-                result['name'])
+            content = '{} - {} - {}'.format(result['artists'][0]['name'], result['album']['name'], result['name'])

            embedded = embedded_url.format(audioid=result['id'])

            # append result
-            results.append({'url': url,
-                            'title': title,
-                            'embedded': embedded,
-                            'content': content})
+            results.append({'url': url, 'title': title, 'embedded': embedded, 'content': content})

    # return results
    return results
--- a/searx/engines/springer.py
+++ b/searx/engines/springer.py
@ -26,15 +26,11 @@ api_key = 'unset'

 base_url = 'https://api.springernature.com/metadata/json?'

+
 def request(query, params):
    if api_key == 'unset':
        raise SearxEngineAPIException('missing Springer-Nature API key')
-    args = urlencode({
-        'q' : query,
-        's' : nb_per_page * (params['pageno'] - 1),
-        'p' : nb_per_page,
-        'api_key' : api_key
-        })
+    args = urlencode({'q': query, 's': nb_per_page * (params['pageno'] - 1), 'p': nb_per_page, 'api_key': api_key})
    params['url'] = base_url + args
    logger.debug("query_url --> %s", params['url'])
    return params
@ -50,21 +46,27 @@ def response(resp):
            content += "..."
        published = datetime.strptime(record['publicationDate'], '%Y-%m-%d')

-        metadata = [record[x] for x in [
+        metadata = [
+            record[x]
+            for x in [
                'publicationName',
                'identifier',
                'contentType',
-        ] if record.get(x) is not None]
+            ]
+            if record.get(x) is not None
+        ]

        metadata = ' / '.join(metadata)
        if record.get('startingPage') and record.get('endingPage') is not None:
            metadata += " (%(startingPage)s-%(endingPage)s)" % record

-        results.append({
+        results.append(
+            {
                'title': record['title'],
                'url': record['url'][0]['value'].replace('http://', 'https://', 1),
-            'content' : content,
-            'publishedDate' : published,
-            'metadata' : metadata
-        })
+                'content': content,
+                'publishedDate': published,
+                'metadata': metadata,
+            }
+        )
    return results
--- a/searx/engines/sqlite.py
+++ b/searx/engines/sqlite.py
@ -49,7 +49,7 @@ def search(query, params):
        'query': query,
        'wildcard': r'%' + query.replace(' ', r'%') + r'%',
        'limit': limit,
-        'offset': (params['pageno'] - 1) * limit
+        'offset': (params['pageno'] - 1) * limit,
    }
    query_to_run = query_str + ' LIMIT :limit OFFSET :offset'

@ -59,7 +59,7 @@ def search(query, params):
        col_names = [cn[0] for cn in cur.description]

        for row in cur.fetchall():
-            item = dict( zip(col_names, map(str, row)) )
+            item = dict(zip(col_names, map(str, row)))
            item['template'] = result_template
            logger.debug("append result --> %s", item)
            results.append(item)
--- a/searx/engines/stackexchange.py
+++ b/searx/engines/stackexchange.py
@ -23,26 +23,30 @@ paging = True
 pagesize = 10

 api_site = 'stackoverflow'
-api_sort= 'activity'
+api_sort = 'activity'
 api_order = 'desc'

 # https://api.stackexchange.com/docs/advanced-search
 search_api = 'https://api.stackexchange.com/2.3/search/advanced?'

+
 def request(query, params):

-    args = urlencode({
-        'q' : query,
-        'page' : params['pageno'],
-        'pagesize' : pagesize,
-        'site' : api_site,
-        'sort' : api_sort,
+    args = urlencode(
+        {
+            'q': query,
+            'page': params['pageno'],
+            'pagesize': pagesize,
+            'site': api_site,
+            'sort': api_sort,
            'order': 'desc',
-        })
+        }
+    )
    params['url'] = search_api + args

    return params

+
 def response(resp):

    results = []
@ -56,10 +60,12 @@ def response(resp):
            content += ' // is answered'
        content += " // score: %s" % result['score']

-        results.append({
+        results.append(
+            {
                'url': "https://%s.com/q/%s" % (api_site, result['question_id']),
                'title': html.unescape(result['title']),
                'content': html.unescape(content),
-        })
+            }
+        )

    return results
--- a/searx/engines/startpage.py
+++ b/searx/engines/startpage.py
@ -101,7 +101,7 @@ def response(resp):
        # check if search result starts with something like: "2 Sep 2014 ... "
        if re.match(r"^([1-9]|[1-2][0-9]|3[0-1]) [A-Z][a-z]{2} [0-9]{4} \.\.\. ", content):
            date_pos = content.find('...') + 4
-            date_string = content[0:date_pos - 5]
+            date_string = content[0 : date_pos - 5]
            # fix content string
            content = content[date_pos:]

@ -113,7 +113,7 @@ def response(resp):
        # check if search result starts with something like: "5 days ago ... "
        elif re.match(r"^[0-9]+ days? ago \.\.\. ", content):
            date_pos = content.find('...') + 4
-            date_string = content[0:date_pos - 5]
+            date_string = content[0 : date_pos - 5]

            # calculate datetime
            published_date = datetime.now() - timedelta(days=int(re.match(r'\d+', date_string).group()))
@ -123,15 +123,10 @@ def response(resp):

        if published_date:
            # append result
-            results.append({'url': url,
-                            'title': title,
-                            'content': content,
-                            'publishedDate': published_date})
+            results.append({'url': url, 'title': title, 'content': content, 'publishedDate': published_date})
        else:
            # append result
-            results.append({'url': url,
-                            'title': title,
-                            'content': content})
+            results.append({'url': url, 'title': title, 'content': content})

    # return results
    return results
@ -152,7 +147,7 @@ def _fetch_supported_languages(resp):
        'malayam': 'ml',
        'norsk': 'nb',
        'sinhalese': 'si',
-        'sudanese': 'su'
+        'sudanese': 'su',
    }

    # get the English name of every language known by babel
--- a/searx/engines/tokyotoshokan.py
+++ b/searx/engines/tokyotoshokan.py
@ -56,11 +56,7 @@ def response(resp):
        name_row = rows[i]

        links = name_row.xpath('./td[@class="desc-top"]/a')
-        params = {
-            'template': 'torrent.html',
-            'url': links[-1].attrib.get('href'),
-            'title': extract_text(links[-1])
-        }
+        params = {'template': 'torrent.html', 'url': links[-1].attrib.get('href'), 'title': extract_text(links[-1])}
        # I have not yet seen any torrents without magnet links, but
        # it's better to be prepared to stumble upon one some day
        if len(links) == 2:
--- a/searx/engines/torznab.py
+++ b/searx/engines/torznab.py
@ -35,10 +35,12 @@ api_key = ''
 # https://newznab.readthedocs.io/en/latest/misc/api/#predefined-categories
 torznab_categories = []

+
 def init(engine_settings=None):  # pylint: disable=unused-argument
    if len(base_url) < 1:
        raise ValueError('missing torznab base_url')

+
 def request(query, params):

    search_url = base_url + '?t=search&q={search_query}'
@ -48,13 +50,12 @@ def request(query, params):
        search_url += '&cat={torznab_categories}'

    params['url'] = search_url.format(
-        search_query = quote(query),
-        api_key = api_key,
-        torznab_categories = ",".join([str(x) for x in torznab_categories])
+        search_query=quote(query), api_key=api_key, torznab_categories=",".join([str(x) for x in torznab_categories])
    )

    return params

+
 def response(resp):
    results = []

@ -103,8 +104,7 @@ def response(resp):

        result["publishedDate"] = None
        try:
-            result["publishedDate"] = datetime.strptime(
-                get_property(item, 'pubDate'), '%a, %d %b %Y %H:%M:%S %z')
+            result["publishedDate"] = datetime.strptime(get_property(item, 'pubDate'), '%a, %d %b %Y %H:%M:%S %z')
        except (ValueError, TypeError) as e:
            logger.debug("ignore exception (publishedDate): %s", e)

@ -134,9 +134,7 @@ def get_property(item, property_name):
 def get_torznab_attr(item, attr_name):
    element = item.find(
        './/torznab:attr[@name="{attr_name}"]'.format(attr_name=attr_name),
-        {
-            'torznab': 'http://torznab.com/schemas/2015/feed'
-        }
+        {'torznab': 'http://torznab.com/schemas/2015/feed'},
    )

    if element is not None:
--- a/searx/engines/translated.py
+++ b/searx/engines/translated.py
@ -28,24 +28,25 @@ def request(query, params):
        key_form = '&key=' + api_key
    else:
        key_form = ''
-    params['url'] = url.format(from_lang=params['from_lang'][1],
-                               to_lang=params['to_lang'][1],
-                               query=params['query'],
-                               key=key_form)
+    params['url'] = url.format(
+        from_lang=params['from_lang'][1], to_lang=params['to_lang'][1], query=params['query'], key=key_form
+    )
    return params


 def response(resp):
    results = []
-    results.append({
+    results.append(
+        {
            'url': web_url.format(
                from_lang=resp.search_params['from_lang'][2],
                to_lang=resp.search_params['to_lang'][2],
-            query=resp.search_params['query']),
+                query=resp.search_params['query'],
+            ),
            'title': '[{0}-{1}] {2}'.format(
-            resp.search_params['from_lang'][1],
-            resp.search_params['to_lang'][1],
-            resp.search_params['query']),
-        'content': resp.json()['responseData']['translatedText']
-    })
+                resp.search_params['from_lang'][1], resp.search_params['to_lang'][1], resp.search_params['query']
+            ),
+            'content': resp.json()['responseData']['translatedText'],
+        }
+    )
    return results
--- a/searx/engines/unsplash.py
+++ b/searx/engines/unsplash.py
@ -26,23 +26,13 @@ paging = True

 def clean_url(url):
    parsed = urlparse(url)
-    query = [(k, v) for (k, v)
-             in parse_qsl(parsed.query) if k not in ['ixid', 's']]
+    query = [(k, v) for (k, v) in parse_qsl(parsed.query) if k not in ['ixid', 's']]

-    return urlunparse((
-        parsed.scheme,
-        parsed.netloc,
-        parsed.path,
-        parsed.params,
-        urlencode(query),
-        parsed.fragment
-    ))
+    return urlunparse((parsed.scheme, parsed.netloc, parsed.path, parsed.params, urlencode(query), parsed.fragment))


 def request(query, params):
-    params['url'] = search_url + urlencode({
-        'query': query, 'page': params['pageno'], 'per_page': page_size
-    })
+    params['url'] = search_url + urlencode({'query': query, 'page': params['pageno'], 'per_page': page_size})
    logger.debug("query_url --> %s", params['url'])
    return params

@ -53,13 +43,15 @@ def response(resp):

    if 'results' in json_data:
        for result in json_data['results']:
-            results.append({
+            results.append(
+                {
                    'template': 'images.html',
                    'url': clean_url(result['links']['html']),
                    'thumbnail_src': clean_url(result['urls']['thumb']),
                    'img_src': clean_url(result['urls']['raw']),
                    'title': result.get('alt_description') or 'unknown',
-                'content': result.get('description') or ''
-            })
+                    'content': result.get('description') or '',
+                }
+            )

    return results
--- a/searx/engines/vimeo.py
+++ b/searx/engines/vimeo.py
@ -25,15 +25,16 @@ paging = True
 base_url = 'https://vimeo.com/'
 search_url = base_url + '/search/page:{pageno}?{query}'

-embedded_url = '<iframe data-src="https://player.vimeo.com/video/{videoid}" ' +\
-    'width="540" height="304" frameborder="0" ' +\
-    'webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>'
+embedded_url = (
+    '<iframe data-src="https://player.vimeo.com/video/{videoid}" '
+    + 'width="540" height="304" frameborder="0" '
+    + 'webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>'
+)


 # do search-request
 def request(query, params):
-    params['url'] = search_url.format(pageno=params['pageno'],
-                                      query=urlencode({'q': query}))
+    params['url'] = search_url.format(pageno=params['pageno'], query=urlencode({'q': query}))

    return params

@ -56,13 +57,17 @@ def response(resp):
        embedded = embedded_url.format(videoid=videoid)

        # append result
-        results.append({'url': url,
+        results.append(
+            {
+                'url': url,
                'title': title,
                'content': '',
                'template': 'videos.html',
                'publishedDate': publishedDate,
                'embedded': embedded,
-                        'thumbnail': thumbnail})
+                'thumbnail': thumbnail,
+            }
+        )

    # return results
    return results
--- a/searx/engines/wikidata.py
+++ b/searx/engines/wikidata.py
@ -14,7 +14,10 @@ from searx.data import WIKIDATA_UNITS
 from searx.network import post, get
 from searx.utils import match_language, searx_useragent, get_string_replaces_function
 from searx.external_urls import get_external_url, get_earth_coordinates_url, area_to_osm_zoom
-from searx.engines.wikipedia import _fetch_supported_languages, supported_languages_url  # NOQA # pylint: disable=unused-import
+from searx.engines.wikipedia import (
+    _fetch_supported_languages,
+    supported_languages_url,
+)  # NOQA # pylint: disable=unused-import

 # about
 about = {
@ -112,10 +115,7 @@ replace_http_by_https = get_string_replaces_function({'http:': 'https:'})

 def get_headers():
    # user agent: https://www.mediawiki.org/wiki/Wikidata_Query_Service/User_Manual#Query_limits
-    return {
-        'Accept': 'application/sparql-results+json',
-        'User-Agent': searx_useragent()
-    }
+    return {'Accept': 'application/sparql-results+json', 'User-Agent': searx_useragent()}


 def get_label_for_entity(entity_id, language):
@ -211,9 +211,9 @@ def get_results(attribute_result, attributes, language):
                        results.append({'title': infobox_title, 'url': url})
                    # update the infobox_id with the wikipedia URL
                    # first the local wikipedia URL, and as fallback the english wikipedia URL
-                    if attribute_type == WDArticle\
-                       and ((attribute.language == 'en' and infobox_id_lang is None)
-                            or attribute.language != 'en'):
+                    if attribute_type == WDArticle and (
+                        (attribute.language == 'en' and infobox_id_lang is None) or attribute.language != 'en'
+                    ):
                        infobox_id_lang = attribute.language
                        infobox_id = url
            elif attribute_type == WDImageAttribute:
@ -232,13 +232,11 @@ def get_results(attribute_result, attributes, language):
                osm_zoom = area_to_osm_zoom(area) if area else 19
                url = attribute.get_geo_url(attribute_result, osm_zoom=osm_zoom)
                if url:
-                    infobox_urls.append({'title': attribute.get_label(language),
-                                         'url': url,
-                                         'entity': attribute.name})
+                    infobox_urls.append({'title': attribute.get_label(language), 'url': url, 'entity': attribute.name})
            else:
-                infobox_attributes.append({'label': attribute.get_label(language),
-                                           'value': value,
-                                           'entity': attribute.name})
+                infobox_attributes.append(
+                    {'label': attribute.get_label(language), 'value': value, 'entity': attribute.name}
+                )

    if infobox_id:
        infobox_id = replace_http_by_https(infobox_id)
@ -246,22 +244,19 @@ def get_results(attribute_result, attributes, language):
    # add the wikidata URL at the end
    infobox_urls.append({'title': 'Wikidata', 'url': attribute_result['item']})

-    if img_src is None and len(infobox_attributes) == 0 and len(infobox_urls) == 1 and\
-       len(infobox_content) == 0:
-        results.append({
-            'url': infobox_urls[0]['url'],
-            'title': infobox_title,
-            'content': infobox_content
-        })
+    if img_src is None and len(infobox_attributes) == 0 and len(infobox_urls) == 1 and len(infobox_content) == 0:
+        results.append({'url': infobox_urls[0]['url'], 'title': infobox_title, 'content': infobox_content})
    else:
-        results.append({
+        results.append(
+            {
                'infobox': infobox_title,
                'id': infobox_id,
                'content': infobox_content,
                'img_src': img_src,
                'urls': infobox_urls,
-            'attributes': infobox_attributes
-        })
+                'attributes': infobox_attributes,
+            }
+        )
    return results


@ -271,13 +266,14 @@ def get_query(query, language):
    where = list(filter(lambda s: len(s) > 0, [a.get_where() for a in attributes]))
    wikibase_label = list(filter(lambda s: len(s) > 0, [a.get_wikibase_label() for a in attributes]))
    group_by = list(filter(lambda s: len(s) > 0, [a.get_group_by() for a in attributes]))
-    query = QUERY_TEMPLATE\
-        .replace('%QUERY%', sparql_string_escape(query))\
-        .replace('%SELECT%', ' '.join(select))\
-        .replace('%WHERE%', '\n  '.join(where))\
-        .replace('%WIKIBASE_LABELS%', '\n      '.join(wikibase_label))\
-        .replace('%GROUP_BY%', ' '.join(group_by))\
+    query = (
+        QUERY_TEMPLATE.replace('%QUERY%', sparql_string_escape(query))
+        .replace('%SELECT%', ' '.join(select))
+        .replace('%WHERE%', '\n  '.join(where))
+        .replace('%WIKIBASE_LABELS%', '\n      '.join(wikibase_label))
+        .replace('%GROUP_BY%', ' '.join(group_by))
        .replace('%LANGUAGE%', language)
+    )
    return query, attributes


@ -303,28 +299,34 @@ def get_attributes(language):
        attributes.append(WDDateAttribute(name))

    # Dates
-    for p in ['P571',    # inception date
+    for p in [
+        'P571',  # inception date
        'P576',  # dissolution date
        'P580',  # start date
        'P582',  # end date
        'P569',  # date of birth
        'P570',  # date of death
        'P619',  # date of spacecraft launch
-              'P620']:   # date of spacecraft landing
+        'P620',
+    ]:  # date of spacecraft landing
        add_date(p)

-    for p in ['P27',     # country of citizenship
+    for p in [
+        'P27',  # country of citizenship
        'P495',  # country of origin
        'P17',  # country
-              'P159']:   # headquarters location
+        'P159',
+    ]:  # headquarters location
        add_label(p)

    # Places
-    for p in ['P36',     # capital
+    for p in [
+        'P36',  # capital
        'P35',  # head of state
        'P6',  # head of government
        'P122',  # basic form of government
-              'P37']:    # official language
+        'P37',
+    ]:  # official language
        add_label(p)

    add_value('P1082')  # population
@ -334,7 +336,8 @@ def get_attributes(language):
    add_amount('P2048')  # heigth (building)

    # Media
-    for p in ['P400',    # platform (videogames, computing)
+    for p in [
+        'P400',  # platform (videogames, computing)
        'P50',  # author
        'P170',  # creator
        'P57',  # director
@ -348,7 +351,8 @@ def get_attributes(language):
        'P123',  # publisher
        'P449',  # original network
        'P750',  # distributed by
-              'P86']:    # composer
+        'P86',
+    ]:  # composer
        add_label(p)

    add_date('P577')  # publication date
@ -415,7 +419,7 @@ def get_attributes(language):

 class WDAttribute:

-    __slots__ = 'name',
+    __slots__ = ('name',)

    def __init__(self, name):
        self.name = name
@ -443,14 +447,15 @@ class WDAttribute:


 class WDAmountAttribute(WDAttribute):
-
    def get_select(self):
        return '?{name} ?{name}Unit'.replace('{name}', self.name)

    def get_where(self):
        return """  OPTIONAL { ?item p:{name} ?{name}Node .
    ?{name}Node rdf:type wikibase:BestRank ; ps:{name} ?{name} .
-    OPTIONAL { ?{name}Node psv:{name}/wikibase:quantityUnit ?{name}Unit. } }""".replace('{name}', self.name)
+    OPTIONAL { ?{name}Node psv:{name}/wikibase:quantityUnit ?{name}Unit. } }""".replace(
+            '{name}', self.name
+        )

    def get_group_by(self):
        return self.get_select()
@ -484,7 +489,9 @@ class WDArticle(WDAttribute):
        return """OPTIONAL { ?article{language} schema:about ?item ;
             schema:inLanguage "{language}" ;
             schema:isPartOf <https://{language}.wikipedia.org/> ;
-             schema:name ?articleName{language} . }""".replace('{language}', self.language)
+             schema:name ?articleName{language} . }""".replace(
+            '{language}', self.language
+        )

    def get_group_by(self):
        return self.get_select()
@ -495,7 +502,6 @@ class WDArticle(WDAttribute):


 class WDLabelAttribute(WDAttribute):
-
    def get_select(self):
        return '(group_concat(distinct ?{name}Label;separator=", ") as ?{name}Labels)'.replace('{name}', self.name)

@ -526,14 +532,13 @@ class WDURLAttribute(WDAttribute):
            value = value.split(',')[0]
            url_id = self.url_id
            if value.startswith(WDURLAttribute.HTTP_WIKIMEDIA_IMAGE):
-                value = value[len(WDURLAttribute.HTTP_WIKIMEDIA_IMAGE):]
+                value = value[len(WDURLAttribute.HTTP_WIKIMEDIA_IMAGE) :]
                url_id = 'wikimedia_image'
            return get_external_url(url_id, value)
        return value


 class WDGeoAttribute(WDAttribute):
-
    def get_label(self, language):
        return "OpenStreetMap"

@ -543,7 +548,9 @@ class WDGeoAttribute(WDAttribute):
    def get_where(self):
        return """OPTIONAL { ?item p:{name}/psv:{name} [
    wikibase:geoLatitude ?{name}Lat ;
-    wikibase:geoLongitude ?{name}Long ] }""".replace('{name}', self.name)
+    wikibase:geoLongitude ?{name}Long ] }""".replace(
+            '{name}', self.name
+        )

    def get_group_by(self):
        return self.get_select()
@ -565,7 +572,7 @@ class WDGeoAttribute(WDAttribute):

 class WDImageAttribute(WDURLAttribute):

-    __slots__ = 'priority',
+    __slots__ = ('priority',)

    def __init__(self, name, url_id=None, priority=100):
        super().__init__(name, url_id)
@ -573,7 +580,6 @@ class WDImageAttribute(WDURLAttribute):


 class WDDateAttribute(WDAttribute):
-
    def get_select(self):
        return '?{name} ?{name}timePrecision ?{name}timeZone ?{name}timeCalendar'.replace('{name}', self.name)

@ -587,7 +593,9 @@ class WDDateAttribute(WDAttribute):
    wikibase:timePrecision ?{name}timePrecision ;
    wikibase:timeTimezone ?{name}timeZone ;
    wikibase:timeCalendarModel ?{name}timeCalendar ] . }
-    hint:Prior hint:rangeSafe true;""".replace('{name}', self.name)
+    hint:Prior hint:rangeSafe true;""".replace(
+            '{name}', self.name
+        )

    def get_group_by(self):
        return self.get_select()
@ -619,11 +627,12 @@ class WDDateAttribute(WDAttribute):
    def format_13(self, value, locale):
        timestamp = isoparse(value)
        # precision: minute
-        return get_datetime_format(format, locale=locale) \
-            .replace("'", "") \
-            .replace('{0}', format_time(timestamp, 'full', tzinfo=None,
-                                        locale=locale)) \
+        return (
+            get_datetime_format(format, locale=locale)
+            .replace("'", "")
+            .replace('{0}', format_time(timestamp, 'full', tzinfo=None, locale=locale))
            .replace('{1}', format_date(timestamp, 'short', locale=locale))
+        )

    def format_14(self, value, locale):
        # precision: second.
@ -644,7 +653,7 @@ class WDDateAttribute(WDAttribute):
        '11': ('format_11', 0),  # day
        '12': ('format_13', 0),  # hour (not supported by babel, display minute)
        '13': ('format_13', 0),  # minute
-        '14': ('format_14', 0)  # second
+        '14': ('format_14', 0),  # second
    }

    def get_str(self, result, language):
--- a/searx/engines/wikipedia.py
+++ b/searx/engines/wikipedia.py
@ -39,8 +39,7 @@ def request(query, params):
        query = query.title()

    language = url_lang(params['language'])
-    params['url'] = search_url.format(title=quote(query),
-                                      language=language)
+    params['url'] = search_url.format(title=quote(query), language=language)

    if params['language'].lower() in language_variants.get(language, []):
        params['headers']['Accept-Language'] = params['language'].lower()
@ -63,8 +62,10 @@ def response(resp):
        except:
            pass
        else:
-            if api_result['type'] == 'https://mediawiki.org/wiki/HyperSwitch/errors/bad_request' \
-               and api_result['detail'] == 'title-invalid-characters':
+            if (
+                api_result['type'] == 'https://mediawiki.org/wiki/HyperSwitch/errors/bad_request'
+                and api_result['detail'] == 'title-invalid-characters'
+            ):
                return []

    raise_for_httperror(resp)
@ -81,11 +82,15 @@ def response(resp):

    results.append({'url': wikipedia_link, 'title': title})

-    results.append({'infobox': title,
+    results.append(
+        {
+            'infobox': title,
            'id': wikipedia_link,
            'content': api_result.get('extract', ''),
            'img_src': api_result.get('thumbnail', {}).get('source'),
-                    'urls': [{'title': 'Wikipedia', 'url': wikipedia_link}]})
+            'urls': [{'title': 'Wikipedia', 'url': wikipedia_link}],
+        }
+    )

    return results

--- a/Show more
+++ b/Show more