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YoutubeIE: use a negative index when accessing the last element of the format list

Jaime Marquínez Ferrándiz 12 年之前
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共有 1 个文件被更改,包括 1 次插入1 次删除
  1. 1 1
      youtube_dl/extractor/youtube.py

+ 1 - 1
youtube_dl/extractor/youtube.py

@@ -586,7 +586,7 @@ class YoutubeIE(InfoExtractor):
             if req_format is None or req_format == 'best':
                 video_url_list = [(existing_formats[0], url_map[existing_formats[0]])] # Best quality
             elif req_format == 'worst':
-                video_url_list = [(existing_formats[len(existing_formats)-1], url_map[existing_formats[len(existing_formats)-1]])] # worst quality
+                video_url_list = [(existing_formats[-1], url_map[existing_formats[-1]])] # worst quality
             elif req_format in ('-1', 'all'):
                 video_url_list = [(f, url_map[f]) for f in existing_formats] # All formats
             else: