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Created on 2016-01-10 12:57 by alex.gronholm, last changed 2022-04-11 14:58 by admin. This issue is now closed.
| Messages (3) | |||
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| msg257910 - (view) | Author: Alex Grönholm (alex.gronholm) * | Date: 2016-01-10 12:57 | |
>>> from typing import Union, Iterable >>> Union[str, Iterable[int]] typing.Iterable[int] The union loses the "str" parameter because issubclass(str, collections.abc.Iterable) returns True and the check completely disregards generics. Guido mentioned that issubclass() support for generic types should be going away. In the mean time, maybe the subclass check in typing.GenericMeta should be modified not to do it with types from Typing, but how can we accurately identify them? |
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| msg257925 - (view) | Author: Guido van Rossum (gvanrossum) *  |
Date: 2016-01-10 18:25 | |
Oh, this is yet another reason to finally rip out the issubclass() support... We're tracking that at https://github.com/ambv/typehinting/issues/136 In the meantime, just don't do this! |
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| msg277559 - (view) | Author: Guido van Rossum (gvanrossum) * |
Date: 2016-09-27 22:25 | |
Fixed by 09cc43df4509. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:58:26 | admin | set | github: 70263 |
| 2016-09-27 22:25:19 | gvanrossum | set | status: open -> closed resolution: fixed messages: + msg277559 |
| 2016-06-30 22:07:35 | levkivskyi | set | nosy:
+ levkivskyi |
| 2016-01-10 18:25:26 | gvanrossum | set | messages: + msg257925 |
| 2016-01-10 13:41:14 | ezio.melotti | set | nosy:
+ ezio.melotti stage: test needed |
| 2016-01-10 12:57:34 | alex.gronholm | create | |