[fix] pep8 : duckduckgo_definitions and wikidata engines

searx/engines/duckduckgo_definitions.py

 from lxml import html
 from searx.engines.xpath import extract_text
 
-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'
+
 
 def result_to_text(url, text, htmlResult):
     # TODO : remove result ending with "Meaning" or "Category"
     dom = html.fromstring(htmlResult)
     a = dom.xpath('//a')
-    if len(a)>=1:
+    if len(a) >= 1:
         return extract_text(a[0])
     else:
         return text
 
+
 def html_to_text(htmlFragment):
     dom = html.fromstring(htmlFragment)
     return extract_text(dom)
 
+
 def request(query, params):
     # TODO add kl={locale}
     params['url'] = url.format(query=urlencode({'q': query}))
     # add answer if there is one
     answer = search_res.get('Answer', '')
     if answer != '':
-        results.append({ 'answer' : html_to_text(answer) })
+        results.append({'answer': html_to_text(answer)})
 
     # add infobox
     if 'Definition' in search_res:
-        content = content + search_res.get('Definition', '') 
+        content = content + search_res.get('Definition', '')
 
     if 'Abstract' in search_res:
         content = content + search_res.get('Abstract', '')
 
-
     # image
     image = search_res.get('Image', '')
     image = None if image == '' else image
     # attributes
     if 'Infobox' in search_res:
         infobox = search_res.get('Infobox', None)
-        if  'content' in infobox:
+        if 'content' in infobox:
             for info in infobox.get('content'):
-                attributes.append({'label': info.get('label'), 'value': info.get('value')})
+                attributes.append({'label': info.get('label'),
+                                  'value': info.get('value')})
 
     # urls
     for ddg_result in search_res.get('Results', []):
         if 'FirstURL' in ddg_result:
             firstURL = ddg_result.get('FirstURL', '')
             text = ddg_result.get('Text', '')
-            urls.append({'title':text, 'url':firstURL})
-            results.append({'title':heading, 'url': firstURL})
+            urls.append({'title': text, 'url': firstURL})
+            results.append({'title': heading, 'url': firstURL})
 
     # related topics
     for ddg_result in search_res.get('RelatedTopics', None):
         if 'FirstURL' in ddg_result:
-            suggestion = result_to_text(ddg_result.get('FirstURL', None), ddg_result.get('Text', None), ddg_result.get('Result', None))
+            suggestion = result_to_text(ddg_result.get('FirstURL', None),
+                                        ddg_result.get('Text', None),
+                                        ddg_result.get('Result', None))
             if suggestion != heading:
                 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('FirstURL', None), topic_result.get('Text', None), topic_result.get('Result', None))
+                suggestion = result_to_text(topic_result.get('FirstURL', None),
+                                            topic_result.get('Text', None),
+                                            topic_result.get('Result', None))
                 if suggestion != heading:
                     suggestions.append(suggestion)
 
     if abstractURL != '':
         # add as result ? problem always in english
         infobox_id = abstractURL
-        urls.append({'title': search_res.get('AbstractSource'), 'url': abstractURL})
+        urls.append({'title': search_res.get('AbstractSource'),
+                    'url': abstractURL})
 
     # 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})
 
     # entity
     entity = search_res.get('Entity', None)
-    # TODO continent / country / department / location / waterfall / mountain range : link to map search, get weather, near by locations
+    # TODO continent / country / department / location / waterfall /
+    #      mountain range :
+    #      link to map search, get weather, near by locations
     # TODO musician : link to music search
     # TODO concert tour : ??
-    # TODO film / actor / television  / media franchise : links to IMDB / rottentomatoes (or scrap result)
+    # TODO film / actor / television  / media franchise :
+    #      links to IMDB / rottentomatoes (or scrap result)
     # TODO music : link tu musicbrainz / last.fm
     # TODO book : ??
     # TODO artist / playwright : ??
     # TODO programming language : ??
     # TODO file format : ??
 
-    if len(heading)>0:
+    if len(heading) > 0:
         # TODO get infobox.meta.value where .label='article_title'
-        if image==None and len(attributes)==0 and len(urls)==1 and len(relatedTopics)==0 and len(content)==0:
+        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
-                    })
+                           'url': urls[0]['url'],
+                           'title': heading,
+                           'content': content
+                           })
         else:
             results.append({
-                    'infobox': heading,
-                    'id': infobox_id,
-                    'entity': entity,
-                    'content': content,
-                    'img_src' : image,
-                    'attributes': attributes,
-                    'urls': urls,
-                    'relatedTopics': relatedTopics
-                    })
+                           'infobox': heading,
+                           'id': infobox_id,
+                           'entity': entity,
+                           'content': content,
+                           'img_src': image,
+                           'attributes': attributes,
+                           'urls': urls,
+                           'relatedTopics': relatedTopics
+                           })
 
     return results

searx/engines/wikidata.py

 from requests import get
 from urllib import urlencode
 
-resultCount=1
-urlSearch = 'https://www.wikidata.org/w/api.php?action=query&list=search&format=json&srnamespace=0&srprop=sectiontitle&{query}'
-urlDetail = 'https://www.wikidata.org/w/api.php?action=wbgetentities&format=json&props=labels%7Cinfo%7Csitelinks%7Csitelinks%2Furls%7Cdescriptions%7Cclaims&{query}'
-urlMap = 'https://www.openstreetmap.org/?lat={latitude}&lon={longitude}&zoom={zoom}&layers=M'
+result_count = 1
+wikidata_host = 'https://www.wikidata.org'
+wikidata_api = wikidata_host + '/w/api.php'
+url_search = wikidata_api \
+    + '?action=query&list=search&format=json'\
+    + '&srnamespace=0&srprop=sectiontitle&{query}'
+url_detail = wikidata_api\
+    + '?action=wbgetentities&format=json'\
+    + '&props=labels%7Cinfo%7Csitelinks'\
+    + '%7Csitelinks%2Furls%7Cdescriptions%7Cclaims'\
+    + '&{query}'
+url_map = 'https://www.openstreetmap.org/'\
+    + '?lat={latitude}&lon={longitude}&zoom={zoom}&layers=M'
+
 
 def request(query, params):
-    params['url'] = urlSearch.format(query=urlencode({'srsearch': query, 'srlimit': resultCount}))
+    params['url'] = url_search.format(
+        query=urlencode({'srsearch': query,
+                        'srlimit': result_count}))
     return params
 
 
     language = resp.search_params['language'].split('_')[0]
     if language == 'all':
         language = 'en'
-    url = urlDetail.format(query=urlencode({'ids': '|'.join(wikidata_ids), 'languages': language + '|en'}))
+    url = url_detail.format(query=urlencode({'ids': '|'.join(wikidata_ids),
+                                            'languages': language + '|en'}))
 
     htmlresponse = get(url)
     jsonresponse = json.loads(htmlresponse.content)
 
     return results
 
+
 def getDetail(jsonresponse, wikidata_id, language):
     results = []
     urls = []
     result = jsonresponse.get('entities', {}).get(wikidata_id, {})
 
     title = result.get('labels', {}).get(language, {}).get('value', None)
-    if title == None:
+    if title is None:
         title = result.get('labels', {}).get('en', {}).get('value', None)
-    if title == None:
+    if title is None:
         return results
 
-    description = result.get('descriptions', {}).get(language, {}).get('value', None)
-    if description == None:
-        description = result.get('descriptions', {}).get('en', {}).get('value', '')
+    description = result\
+        .get('descriptions', {})\
+        .get(language, {})\
+        .get('value', None)
+
+    if description is None:
+        description = result\
+            .get('descriptions', {})\
+            .get('en', {})\
+            .get('value', '')
 
     claims = result.get('claims', {})
     official_website = get_string(claims, 'P856', None)
-    if official_website != None:
-        urls.append({ 'title' : 'Official site', 'url': official_website })
-        results.append({ 'title': title, 'url' : official_website })
+    if official_website is not None:
+        urls.append({'title': 'Official site', 'url': official_website})
+        results.append({'title': title, 'url': official_website})
 
     wikipedia_link_count = 0
     if language != 'en':
-        wikipedia_link_count += add_url(urls, 'Wikipedia (' + language + ')', get_wikilink(result, language + 'wiki'))
+        wikipedia_link_count += add_url(urls,
+                                        'Wikipedia (' + language + ')',
+                                        get_wikilink(result, language +
+                                                     'wiki'))
     wikipedia_en_link = get_wikilink(result, 'enwiki')
-    wikipedia_link_count += add_url(urls, 'Wikipedia (en)', wikipedia_en_link)
+    wikipedia_link_count += add_url(urls,
+                                    'Wikipedia (en)',
+                                    wikipedia_en_link)
     if wikipedia_link_count == 0:
         misc_language = get_wiki_firstlanguage(result, 'wiki')
-        if misc_language != None:
-            add_url(urls, 'Wikipedia (' + misc_language + ')', get_wikilink(result, misc_language + 'wiki'))
+        if misc_language is not None:
+            add_url(urls,
+                    'Wikipedia (' + misc_language + ')',
+                    get_wikilink(result, misc_language + 'wiki'))
 
     if language != 'en':
-        add_url(urls, 'Wiki voyage (' + language + ')', get_wikilink(result, language + 'wikivoyage'))
-    add_url(urls, 'Wiki voyage (en)', get_wikilink(result, 'enwikivoyage'))
+        add_url(urls,
+                'Wiki voyage (' + language + ')',
+                get_wikilink(result, language + 'wikivoyage'))
+
+    add_url(urls,
+            'Wiki voyage (en)',
+            get_wikilink(result, 'enwikivoyage'))
 
     if language != 'en':
-        add_url(urls, 'Wikiquote (' + language + ')', get_wikilink(result, language + 'wikiquote'))
-    add_url(urls, 'Wikiquote (en)', get_wikilink(result, 'enwikiquote'))
+        add_url(urls,
+                'Wikiquote (' + language + ')',
+                get_wikilink(result, language + 'wikiquote'))
 
-    add_url(urls, 'Commons wiki', get_wikilink(result, 'commonswiki'))
+    add_url(urls,
+            'Wikiquote (en)',
+            get_wikilink(result, 'enwikiquote'))
 
-    add_url(urls, 'Location', get_geolink(claims, 'P625', None))
+    add_url(urls,
+            'Commons wiki',
+            get_wikilink(result, 'commonswiki'))
 
-    add_url(urls, 'Wikidata', 'https://www.wikidata.org/wiki/' + wikidata_id + '?uselang='+ language)
+    add_url(urls,
+            'Location',
+            get_geolink(claims, 'P625', None))
+
+    add_url(urls,
+            'Wikidata',
+            'https://www.wikidata.org/wiki/'
+            + wikidata_id + '?uselang=' + language)
 
     musicbrainz_work_id = get_string(claims, 'P435')
-    if musicbrainz_work_id != None:
-        add_url(urls, 'MusicBrainz', 'http://musicbrainz.org/work/' + musicbrainz_work_id)
+    if musicbrainz_work_id is not None:
+        add_url(urls,
+                'MusicBrainz',
+                'http://musicbrainz.org/work/'
+                + musicbrainz_work_id)
 
     musicbrainz_artist_id = get_string(claims, 'P434')
-    if musicbrainz_artist_id != None:
-        add_url(urls, 'MusicBrainz', 'http://musicbrainz.org/artist/' + musicbrainz_artist_id)
+    if musicbrainz_artist_id is not None:
+        add_url(urls,
+                'MusicBrainz',
+                'http://musicbrainz.org/artist/'
+                + musicbrainz_artist_id)
 
     musicbrainz_release_group_id = get_string(claims, 'P436')
-    if musicbrainz_release_group_id != None:
-        add_url(urls, 'MusicBrainz', 'http://musicbrainz.org/release-group/' + musicbrainz_release_group_id)
+    if musicbrainz_release_group_id is not None:
+        add_url(urls,
+                'MusicBrainz',
+                'http://musicbrainz.org/release-group/'
+                + musicbrainz_release_group_id)
 
     musicbrainz_label_id = get_string(claims, 'P966')
-    if musicbrainz_label_id != None:
-        add_url(urls, 'MusicBrainz', 'http://musicbrainz.org/label/' + musicbrainz_label_id)
+    if musicbrainz_label_id is not None:
+        add_url(urls,
+                'MusicBrainz',
+                'http://musicbrainz.org/label/'
+                + musicbrainz_label_id)
 
     # musicbrainz_area_id = get_string(claims, 'P982')
     # P1407 MusicBrainz series ID
     # P1407 MusicBrainz series ID
 
     postal_code = get_string(claims, 'P281', None)
-    if postal_code != None:
-        attributes.append({'label' : 'Postal code(s)', 'value' : postal_code})
+    if postal_code is not None:
+        attributes.append({'label': 'Postal code(s)', 'value': postal_code})
 
     date_of_birth = get_time(claims, 'P569', None)
-    if date_of_birth != None:
-        attributes.append({'label' : 'Date of birth', 'value' : date_of_birth})
+    if date_of_birth is not None:
+        attributes.append({'label': 'Date of birth', 'value': date_of_birth})
 
     date_of_death = get_time(claims, 'P570', None)
-    if date_of_death != None:
-        attributes.append({'label' : 'Date of death', 'value' : date_of_death})
+    if date_of_death is not None:
+        attributes.append({'label': 'Date of death', 'value': date_of_death})
 
-    if len(attributes)==0 and len(urls)==2 and len(description)==0:
+    if len(attributes) == 0 and len(urls) == 2 and len(description) == 0:
         results.append({
-                'url': urls[0]['url'],
-                'title': title,
-                'content': description
-                })
+                       'url': urls[0]['url'],
+                       'title': title,
+                       'content': description
+                       })
     else:
         results.append({
-                'infobox' : title,
-                'id' : wikipedia_en_link,
-                'content' : description,
-                'attributes' : attributes,
-                'urls' : urls
-                })
+                       'infobox': title,
+                       'id': wikipedia_en_link,
+                       'content': description,
+                       'attributes': attributes,
+                       'urls': urls
+                       })
 
     return results
 
 
 def add_url(urls, title, url):
-    if url != None:
-        urls.append({'title' : title, 'url' : url})
+    if url is not None:
+        urls.append({'title': title, 'url': url})
         return 1
     else:
         return 0
 
+
 def get_mainsnak(claims, propertyName):
     propValue = claims.get(propertyName, {})
     if len(propValue) == 0:
         mainsnak = e.get('mainsnak', {})
 
         datavalue = mainsnak.get('datavalue', {})
-        if datavalue != None:
+        if datavalue is not None:
             result.append(datavalue.get('value', ''))
 
     if len(result) == 0:
         mainsnak = e.get('mainsnak', {})
 
         datavalue = mainsnak.get('datavalue', {})
-        if datavalue != None:
+        if datavalue is not None:
             value = datavalue.get('value', '')
             result.append(value.get('time', ''))
 
 def get_geolink(claims, propertyName, defaultValue=''):
     mainsnak = get_mainsnak(claims, propertyName)
 
-    if mainsnak == None:
+    if mainsnak is None:
         return defaultValue
 
     datatype = mainsnak.get('datatype', '')
     # 1 --> 6
     # 0.016666666666667 --> 9
     # 0.00027777777777778 --> 19
-    # wolframalpha : quadratic fit { {13, 5}, {1, 6}, {0.0166666, 9}, {0.0002777777,19}}
+    # wolframalpha :
+    # quadratic fit { {13, 5}, {1, 6}, {0.0166666, 9}, {0.0002777777,19}}
     # 14.1186-8.8322 x+0.625447 x^2
     if precision < 0.0003:
         zoom = 19
     else:
         zoom = int(15 - precision*8.8322 + precision*precision*0.625447)
 
-    url = urlMap.replace('{latitude}', str(value.get('latitude',0))).replace('{longitude}', str(value.get('longitude',0))).replace('{zoom}', str(zoom))
+    url = url_map\
+        .replace('{latitude}', str(value.get('latitude', 0)))\
+        .replace('{longitude}', str(value.get('longitude', 0)))\
+        .replace('{zoom}', str(zoom))
 
     return url
 
 
 def get_wikilink(result, wikiid):
     url = result.get('sitelinks', {}).get(wikiid, {}).get('url', None)
-    if url == None:
+    if url is None:
         return url
     elif url.startswith('http://'):
         url = url.replace('http://', 'https://')
         url = 'https:' + url
     return url
 
+
 def get_wiki_firstlanguage(result, wikipatternid):
     for k in result.get('sitelinks', {}).keys():
-        if k.endswith(wikipatternid) and len(k)==(2+len(wikipatternid)):
+        if k.endswith(wikipatternid) and len(k) == (2+len(wikipatternid)):
             return k[0:2]
     return None