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Diffstat (limited to 'youtube_dl/extractor/common.py')
| -rw-r--r-- | youtube_dl/extractor/common.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py index 611cf95f1..450c7dfd6 100644 --- a/youtube_dl/extractor/common.py +++ b/youtube_dl/extractor/common.py @@ -138,6 +138,8 @@ class InfoExtractor(object): Unless mentioned otherwise, the fields should be Unicode strings. + Unless mentioned otherwise, None is equivalent to absence of information. + Subclasses of this one should re-define the _real_initialize() and _real_extract() methods and define a _VALID_URL regexp. Probably, they should also be added to the list of extractors. |