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what module is NoneType in? - Skaperen - Nov-28-2019
what module is
NoneType in? i didn't find it in the library, language, tutorial, or using documentation or in module "types".
RE: what module is NoneType in? - buran - Nov-28-2019
Not sure if this answers your question but look at https://docs.python.org/3/library/stdtypes.html#the-null-object
RE: what module is NoneType in? - Gribouillis - Nov-28-2019
I think it is in module 'builtins' (with an s)
RE: what module is NoneType in? - Skaperen - Nov-28-2019
(Nov-28-2019, 05:02 AM)buran Wrote: Not sure if this answers your question but look at https://docs.python.org/3/library/stdtypes.html#the-null-object
no, it does not even mention it.
(Nov-28-2019, 12:07 PM)Gribouillis Wrote: I think it is in module 'builtins' (with an s)
seems to be the same thing as already there as
__builtins__.
RE: what module is NoneType in? - buran - Nov-28-2019
(Nov-28-2019, 03:23 PM)Skaperen Wrote: it does not even mention it.Well, it does;
Quote:The Null Object¶
This object is returned by functions that don’t explicitly return a value. It supports no special operations. There is exactly one null object, named None (a built-in name). type(None)() produces the same singleton.
It is written as None.
RE: what module is NoneType in? - Skaperen - Nov-29-2019
it doesn't mention "NoneType", which is what i am looking for. see post #1.
RE: what module is NoneType in? - buran - Nov-29-2019
see the discussion here: https://stackoverflow.com/a/21706626/4046632
RE: what module is NoneType in? - Gribouillis - Nov-29-2019
However
>>> type(None).__module__ 'builtins'but
>>> __builtins__.NoneType Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: module 'builtins' has no attribute 'NoneType'Thus NoneType is hidden.
RE: what module is NoneType in? - buran - Nov-29-2019
>>> __builtins__.type(None) <class 'NoneType'>
Also there is very interesting link in one of the comments in the SO
https://docs.python.org/3/library/typing.html#type-aliases
Quote:Note that None as a type hint is a special case and is replaced by type(None).
As I understand it, in python3
NoneType is only exposed through type(None)And the question is why @Skaperen asked this question in the first place as it starts to look very much like XY problem
RE: what module is NoneType in? - Gribouillis - Nov-29-2019
You're misinterpreting the code
>>> __builtins__.type <class 'type'>so
__builtins__.type(None) is identical to type(None)You can add the type yourself
>>> __builtins__.NoneType = type(None) >>> NoneType <class 'NoneType'>This bug report seems worth reading as well.