ctypes.c_bool(object) is not accepted

[patrickdepinguin]

Python documentation says:
https://docs.python.org/3/library/ctypes.html#ctypes.c_bool

class ctypes.c_bool

    Represent the C bool datatype (more accurately, _Bool from C99). Its value can be True or False, 
    and the constructor accepts any object that has a truth value.

Following code is not accepted by mypy 1.18.2:

import ctypes
flag = ctypes.c_bool(0)

Output is:

/tmp/test.py:3: error: Argument 1 to "c_bool" has incompatible type "int"; expected "bool"  [arg-type]

Since this is valid Python code, I feel that mypy should accept it.

[srittau]

In cases like this we usually tend to be more strict in typeshed, as using a random non-bool object is often an error. But I can see the point in typing this particular constructor more loosely, similar to how builtins.bool() accepts object as parameter.

[GastonAQS]

Hey @srittau I gave it a shot here #14841. I based the change on the link pointed in the body of the PR. Do you think that is too broad for typeshed? If it is I'll gladly update the PR with a more strict typing