original ) (raw )Created on 2018-03-14 13:25 by vlad , last changed 2022-04-11 14:58 by admin . This issue is now closed .
Messages (4)
msg313819 - (view) Author: Vlad Shcherbina (vlad) *
Date: 2018-03-14 13:25
from typing import * def f(arg: str = None): pass print(get_type_hints(f)) # {'arg': typing.Union[str, NoneType]} # as expected class T(NamedTuple): field: str = None print(get_type_hints(T)) # {'field': <class 'str'>} # but it should be # {'field': typing.Union[str, NoneType]} # for consistency
msg313820 - (view) Author: Vlad Shcherbina (vlad) *
Date: 2018-03-14 13:28
If the maintainers agree that it's desirable to automatically deduce optionality, I'll implement it.
msg313828 - (view) Author: Ivan Levkivskyi (levkivskyi) *
Date: 2018-03-14 16:13
This is actually an intended behaviour. Moreover, the implicit optionality of arguments that default to `None` is deprecated and will be removed in one of the future versions. (Note that since typing module is still provisional, this will likely happen without any additional notice.)
msg313835 - (view) Author: Guido van Rossum (gvanrossum) *
Date: 2018-03-14 18:46
This bug report can be closed.
History
Date
User
Action
Args
2022-04-11 14:58:58
admin
set
github: 77256
2018-03-14 19:03:02
levkivskyi
set
status: open -> closed
2018-03-14 18:48:30
levkivskyi
set
resolution: not a bugstage: resolved
2018-03-14 18:46:11
gvanrossum
set
messages: +
2018-03-14 16:13:14
levkivskyi
set
messages: +
2018-03-14 15:43:58
ned.deily
set
nosy: + gvanrossum , levkivskyi
2018-03-14 13:28:34
vlad
set
messages: +
2018-03-14 13:25:09
vlad
create
