Add `txt_or_none()` shim
@ -35,6 +35,9 @@ if not hasattr(InfoExtractor, '_match_valid_url'):
RegexNotFoundError,
)
def txt_or_none(v, default=None):
return default if v is None else (compat_str(v).strip() or default)
BaseIE = InfoExtractor
class InfoExtractor(BaseIE):