Message 410410 - Python tracker

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Author	andreash
Recipients	AlexWaygood, andreash, gvanrossum, kj, kumaraditya, python-dev
Date	2022-01-12.16:26:23
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1642004783.87.0.0438639124096.issue46333@roundup.psfhosted.org>
In-reply-to

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Ah, let me add one point: PEP563 (-> `from __future__ import annotations`) is also not helping. Even with PEP563 enabled, the JSON example Json = Union[ List['Json'], Dict[str, 'Json'], int, float, bool, None ] needs to be written in exact the same way as without PEP563. In other words there are cases where `ForwardRef` cannot be avoided. And unforntunately these are the cases where we have the ForwardRef missing context issue.

Ah, let me add one point: PEP563  (-> `from __future__ import annotations`) is also not helping. 

Even with PEP563 enabled, the JSON example  

   Json = Union[ List['Json'], Dict[str, 'Json'], int, float, bool, None ]

needs to be written in exact the same way as without PEP563. In other words there are cases where `ForwardRef` cannot be avoided. And unforntunately these are the cases where we have the ForwardRef missing context issue.

History
Date	User	Action	Args
2022-01-12 16:26:23	andreash	set	recipients: + andreash, gvanrossum, python-dev, kj, kumaraditya, AlexWaygood
2022-01-12 16:26:23	andreash	set	messageid: <1642004783.87.0.0438639124096.issue46333@roundup.psfhosted.org>
2022-01-12 16:26:23	andreash	link	issue46333 messages
2022-01-12 16:26:23	andreash	create