Adding Overloads of stdlib Built-in Types __new__ with No Arguments

Calling int() and str() with no arguments returns 0 and "" respectively, likewise for bool() == False and bytes() == b"". But to actually call these constructors without arguments is very unusual and is likely a mistake on part of the user.

# a and b are two strings
x = int(a)
y = int()    # typo, should be int(b)

x / y    # ZeroDivisionError

It will be helpful for type stubs to denote that such no-argument calls return a constant value, and for IDEs to possibly notify of such use.

Currently the stub for int.__new__ looks like this:

https://github.com/python/typeshed/blob/904ea9ec022ae75d282f6a4c34563e4e9b8eed15/stdlib/builtins.pyi#L257

class int:
    @overload
    def __new__(cls, x: ConvertibleToInt = 0, /) -> Self: ...

and str.__new__:

class str(Sequence[str]):
    @overload
    def __new__(cls, object: object = "") -> Self: ...

I suggest adding an overload with no argument and removing the default parameter value from the one-arg __new__, though I'm not sure if there are existing special behaviors of type checkers regarding builtins that I'm unaware of.

Commencez par stdlib/builtins.pyi, en particulier par les définitions de int.new et str.new liées dans l’issue, et examinez les stubs des constructeurs intégrés correspondants pour bool et bytes. Vérifiez comment les vérificateurs de types existants gèrent les paramètres par défaut par rapport aux overloads séparés, puis assurez-vous que les stubs distinguent les appels sans argument des appels avec un argument et valident les valeurs constantes inférées qui en résultent.