Improve code style

youtube_dl/extractor/crunchyroll.py

@@ -32,7 +32,6 @@ class CrunchyrollIE(SubtitlesInfoExtractor):
     _VALID_URL = r'https?://(?:(?P<prefix>www|m)\.)?(?P<url>crunchyroll\.com/(?:[^/]*/[^/?&]*?|media/\?id=)(?P<video_id>[0-9]+))(?:[/?&]|$)'
     _TEST = {
         'url': 'http://www.crunchyroll.com/wanna-be-the-strongest-in-the-world/episode-1-an-idol-wrestler-is-born-645513',
-        #'md5': 'b1639fd6ddfaa43788c85f6d1dddd412',
         'info_dict': {
             'id': '645513',
             'ext': 'flv',

youtube_dl/extractor/cspan.py

@@ -27,7 +27,6 @@ class CSpanIE(InfoExtractor):
         'url': 'http://www.c-span.org/video/?c4486943/cspan-international-health-care-models',
         # For whatever reason, the served video alternates between
         # two different ones
-        #'md5': 'dbb0f047376d457f2ab8b3929cbb2d0c',
         'info_dict': {
             'id': '340723',
             'ext': 'mp4',

youtube_dl/extractor/tenplay.py

@@ -8,7 +8,6 @@ class TenPlayIE(InfoExtractor):
     _VALID_URL = r'https?://(?:www\.)?ten(play)?\.com\.au/.+'
     _TEST = {
         'url': 'http://tenplay.com.au/ten-insider/extra/season-2013/tenplay-tv-your-way',
-        #'md5': 'd68703d9f73dc8fccf3320ab34202590',
         'info_dict': {
             'id': '2695695426001',
             'ext': 'flv',

youtube_dl/extractor/youtube.py

@@ -527,8 +527,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
                 return 's[%s%s%s]' % (starts, ends, steps)
 
             step = None
-            start = '(Never used)'  # Quelch pyflakes warnings - start will be
+            # Quelch pyflakes warnings - start will be set when step is set
-                                    # set as soon as step is set
+            start = '(Never used)'
             for i, prev in zip(idxs[1:], idxs[:-1]):
                 if step is not None:
                     if i - prev == step: