cleanup pylint errors and py2/3 issues

ox/web/youtube.py

@@ -27,15 +27,15 @@ def video_url(youtubeId, format='mp4', timeout=cache_timeout):
     """
     fmt = None
     if format == '4k':
-        fmt=38
+        fmt = 38
     elif format == '1080p':
-        fmt=37
+        fmt = 37
     elif format == '720p':
-        fmt=22
+        fmt = 22
     elif format == 'mp4':
-        fmt=18
+        fmt = 18
     elif format == 'high':
-        fmt=35
+        fmt = 35
     elif format == 'webm':
         streams = videos(youtubeId, 'webm')
         return streams[max(streams.keys())]['url']