[ivi] Modernize

youtube_dl/extractor/ivi.py

@@ -16,7 +16,7 @@ from ..utils import (
 class IviIE(InfoExtractor):
     IE_DESC = 'ivi.ru'
     IE_NAME = 'ivi'
-    _VALID_URL = r'https?://(?:www\.)?ivi\.ru/(?:watch/(?:[^/]+/)?|video/player\?.*?videoId=)(?P<videoid>\d+)'
+    _VALID_URL = r'https?://(?:www\.)?ivi\.ru/(?:watch/(?:[^/]+/)?|video/player\?.*?videoId=)(?P<id>\d+)'
 
     _TESTS = [
         # Single movie
@@ -63,13 +63,15 @@ class IviIE(InfoExtractor):
         return int(m.group('commentcount')) if m is not None else 0
 
     def _real_extract(self, url):
-        mobj = re.match(self._VALID_URL, url)
-        video_id = mobj.group('videoid')
+        video_id = self._match_id(url)
 
         api_url = 'http://api.digitalaccess.ru/api/json/'
 
-        data = {'method': 'da.content.get',
-                'params': [video_id, {'site': 's183',
+        data = {
+            'method': 'da.content.get',
+            'params': [
+                video_id, {
+                    'site': 's183',
                     'referrer': 'http://www.ivi.ru/watch/%s' % video_id,
                     'contentid': video_id
                 }
@@ -78,14 +80,17 @@ class IviIE(InfoExtractor):
 
         request = compat_urllib_request.Request(api_url, json.dumps(data))
 
-        video_json_page = self._download_webpage(request, video_id, 'Downloading video JSON')
+        video_json_page = self._download_webpage(
+            request, video_id, 'Downloading video JSON')
         video_json = json.loads(video_json_page)
 
         if 'error' in video_json:
             error = video_json['error']
             if error['origin'] == 'NoRedisValidData':
                 raise ExtractorError('Video %s does not exist' % video_id, expected=True)
-            raise ExtractorError('Unable to download video %s: %s' % (video_id, error['message']), expected=True)
+            raise ExtractorError(
+                'Unable to download video %s: %s' % (video_id, error['message']),
+                expected=True)
 
         result = video_json['result']