diff --git a/youtube_dl/extractor/rai.py b/youtube_dl/extractor/rai.py
index 7cf97bb6c..a758d5653 100644
--- a/youtube_dl/extractor/rai.py
+++ b/youtube_dl/extractor/rai.py
@@ -533,32 +533,35 @@ class RaiPlayRadioBaseIE(InfoExtractor):
         for attrs in self.parse_list(webpage):
             title = attrs['data-title'].strip()
             webpage = urljoin(url, attrs['data-mediapolis'])
-            audio_url = compat_str(self._request_webpage(webpage, title).geturl())
+            audio_url = compat_str(self._request_webpage(
+                webpage, title).geturl())
             yield {
                 'url': audio_url,
                 'id': attrs['data-uniquename'].lstrip('ContentItem-'),
                 'title': title,
                 'ext': determine_ext(audio_url),
                 'thumbnail': urljoin(url, attrs['data-image']),
-                'language': 'it',
-            }
+                'language': 'it'}
 
     def get_playlist(self, *args, **kwargs):
         return list(self.get_playlist_iter(*args, **kwargs))
 
 
 class RaiPlayRadioIE(RaiPlayRadioBaseIE):
-    _VALID_URL = r'%s/audio/.+?-(?P<id>%s)\.html' % (RaiPlayRadioBaseIE._BASE, RaiBaseIE._UUID_RE)
+    _VALID_URL = r'%s/audio/.+?-(?P<id>%s)\.html' % (
+        RaiPlayRadioBaseIE._BASE, RaiBaseIE._UUID_RE)
     _TEST = {
-        'url': 'https://www.raiplayradio.it/audio/2019/07/RADIO3---LEZIONI-DI-MUSICA-36b099ff-4123-4443-9bf9-38e43ef5e025.html',
+        'url': 'https://www.raiplayradio.it/audio/2019/07/'
+               'RADIO3---LEZIONI-DI-MUSICA-'
+               '36b099ff-4123-4443-9bf9-38e43ef5e025.html',
         'info_dict': {
             'id': '36b099ff-4123-4443-9bf9-38e43ef5e025',
             'ext': 'mp3',
-            'title': 'Dal "Chiaro di luna" al  "Clair de lune", prima parte con Giovanni Bietti',
-            'thumbnail': 'https://www.raiplayradio.it/cropgd/400x400/dl/img/2019/07/08/1562590329054_luna.jpg',
-            'language': 'it',
-        }
-    }
+            'title': 'Dal "Chiaro di luna" al  "Clair de lune", '
+                     'prima parte con Giovanni Bietti',
+            'thumbnail': 'https://www.raiplayradio.it/cropgd/400x400/dl/'
+                         'img/2019/07/08/1562590329054_luna.jpg',
+            'language': 'it'}}
 
     def _real_extract(self, url):
         list_url = url.replace('.html', '-list.html')
@@ -568,25 +571,30 @@ class RaiPlayRadioIE(RaiPlayRadioBaseIE):
 
 
 class RaiPlayRadioPlaylistIE(RaiPlayRadioBaseIE):
-    _VALID_URL = r'%s/playlist/.+?-(?P<id>%s)\.html' % (RaiPlayRadioBaseIE._BASE, RaiBaseIE._UUID_RE)
+    _VALID_URL = r'%s/playlist/.+?-(?P<id>%s)\.html' % (
+        RaiPlayRadioBaseIE._BASE, RaiBaseIE._UUID_RE)
     _TEST = {
-        'url': 'https://www.raiplayradio.it/playlist/2017/12/Alice-nel-paese-delle-meraviglie-72371d3c-d998-49f3-8860-d168cfdf4966.html',
+        'url': 'https://www.raiplayradio.it/playlist/2017/12/'
+               'Alice-nel-paese-delle-meraviglie-'
+               '72371d3c-d998-49f3-8860-d168cfdf4966.html',
         'info_dict': {
             'id': '72371d3c-d998-49f3-8860-d168cfdf4966',
             'title': "Alice nel paese delle meraviglie",
-            'description': "di Lewis Carrol letto da Aldo Busi",
-        },
-        'playlist_count': 11,
-    }
+            'description': "di Lewis Carrol letto da Aldo Busi"},
+        'playlist_count': 11}
 
     def _real_extract(self, url):
         playlist_id = self._match_id(url)
         playlist_webpage = self._download_webpage(url, playlist_id)
-        playlist_title = unescapeHTML(self._html_search_regex(r'data-playlist-title="(.+?)"', playlist_webpage, 'title'))
-        playlist_creator = self._html_search_meta('nomeProgramma', playlist_webpage)
-        playlist_description = get_element_by_class('textDescriptionProgramma', playlist_webpage)
+        playlist_title = unescapeHTML(self._html_search_regex(
+            r'data-playlist-title="(.+?)"', playlist_webpage, 'title'))
+        playlist_creator = self._html_search_meta(
+            'nomeProgramma', playlist_webpage)
+        playlist_description = get_element_by_class(
+            'textDescriptionProgramma', playlist_webpage)
 
-        player_href = self._html_search_regex(r'data-player-href="(.+?)"', playlist_webpage, 'href')
+        player_href = self._html_search_regex(
+            r'data-player-href="(.+?)"', playlist_webpage, 'href')
         list_url = urljoin(url, player_href)
 
         entries = self.get_playlist(list_url)
@@ -595,7 +603,7 @@ class RaiPlayRadioPlaylistIE(RaiPlayRadioBaseIE):
                 'track': entry['title'],
                 'track_number': index,
                 'album': playlist_title,
-                'artist': playlist_creator,
-            })
+                'artist': playlist_creator})
 
-        return self.playlist_result(entries, playlist_id, playlist_title, playlist_description)
+        return self.playlist_result(
+            entries, playlist_id, playlist_title, playlist_description)