Overloading staticmethods

[nautics889]

Overloaded staticmethod isn't considered correctly by the type checker.
foobar.py

from typing import overload

class Snafu(object):
    @overload
    @staticmethod
    def snafu(value: None) -> None: ...

    @overload
    @staticmethod
    def snafu(value: bytes) -> bytes: ...

    @overload
    @staticmethod
    def snafu(value: str) -> bytes: ...

    @staticmethod
    def snafu(value):
        return bytes(value, encoding='UTF-16')

print(Snafu().snafu('123'))

While running mypy foobar.py expected output: Success: no issues found in 1 source file,
but got foobar.py:21: error: No overload variant of "snafu" of "Snafu" matches argument type "str" .
I guessed #5224 had to fix this, but i've got the behavior above.

Am i doing something wrong?

mypy v0.740, Python v3.7.4

[msullivan]

It looks like it only works right now if you call it directly via the class: Snafu.snauf('123').

[msullivan]

@Michael0x2a Any chance you are excited to take another look at this thrilling interaction?

[LefterisJP]

I have also ran into this problem. Any chance it gets addressed?

[akeeman]

bug stil exists in

mypy 0.812
python 3.8.x

[Jasha10]

My current workaround is to write an overloaded function (outside of the class body) instead of an overloaded staticmethod.

[sam-hoffman]

This bug still appears to exist in mypy 0.931, python 3.10x :(

[srittau]

This is also a problem for typeshed: python/typeshed#7543.

[bluebird75]

Problem still present for mypy 0.961, python 3.10.2

class Toto:

    @overload
    @staticmethod
    def toto(arg: int, arg2: str) -> None: ...

    @overload
    @staticmethod
    def toto(arg: int) -> None: ...

    @overload
    @staticmethod
    def toto() -> None: ...

    @staticmethod
    def toto(arg: int = 0, arg2: str='') -> None:
        pass


Toto.toto(3)
t = Toto()
t.toto(3)

Oucome of mypy:
tests\qapplication.py:35: error: Attribute function "toto" with type "Callable[[], None]" does not accept self argument  [misc]
tests\qapplication.py:35: error: No overload variant of "toto" of "Toto" matches argument type "int"  [call-overload]
tests\qapplication.py:35: note: Possible overload variants:
tests\qapplication.py:35: note:     def toto(arg, arg2: str) -> None
tests\qapplication.py:35: note:     def toto(arg) -> None
tests\qapplication.py:35: note:     def toto() -> None
Found 3 errors in 1 file (checked 1 source file)

Line 35 is the t.toto(3)

[ultrabear]

Had this issue too (0.961 3.10.5), only crops up on instances of the class, not the class itself