Karthikeyan Singaravelan <[email protected]> added the comment:
class Spam:
bar: typing.Optional[bar] = str
class Spaz:
bar: typing.Optional[bar] = None
print(Spam.__annotations__)
print(Spaz.__annotations__)
{'bar': typing.Union[str, NoneType]}
{'bar': <class 'NoneType'>}
In Spam bar has str assigned to it and seems like in Spaz bar is assigned None
and hence during annotation creation this evaluates to bar:
typing.Optional[None] where None is the value of bar and in Spam.bar it's
typing.Union[str, NoneType] instead.
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Python tracker <[email protected]>
<https://bugs.python.org/issue36363>
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