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Fix _document_by_attribute failing on empty media

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Lonami Exo 2018-09-06 15:41:04 +02:00
parent 4e5b8c9c34
commit 11ef4ce370
1 changed files with 7 additions and 4 deletions
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11
telethon/tl/custom/message.py
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@ -700,9 +700,12 @@ class Message(ChatGetter, SenderGetter, TLObject, abc.ABC):
Helper method to return the document only if it has an attribute
that's an instance of the given kind, and passes the condition.
"""
for attr in self.document.attributes:
if isinstance(attr, kind):
if not condition or condition(self.document):
return self.document
doc = self.document
if doc:
for attr in doc.attributes:
if isinstance(attr, kind):
if not condition or condition(doc):
return doc
return None
# endregion Private Methods