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recognize staticmethod's __func__ #11211
Description
To Reproduce
Run mypy against this code
class A(object):
@staticmethod
def open():
return 123
@staticmethod
def proccess():
return 456
switch = {
1: open.__func__,
2: proccess.__func__,
}
p.s. this code snippet is copied from the first solution of https://stackoverflow.com/questions/41921255/staticmethod-object-is-not-callable
Expected Behavior
This code snippet should pass mypy's check.
Actual Behavior
s.py:10: error: "Callable[[], Any]" has no attribute "__func__"
s.py:11: error: "Callable[[], Any]" has no attribute "__func__"
Found 2 errors in 1 file (checked 1 source file)
Your Environment
- Mypy version used: 0.910
- Mypy command-line flags: just file name
- Mypy configuration options from
mypy.ini(and other config files): none - Python version used: 3.9.7
- Operating system and version: Debian rodete
Activity
sobolevn commentedon Sep 29, 2021
The problem here is that we infer
proccessto be justCallablewith no extra metadata. Probably, we can change@staticmethodand@classmethodto be a protocol with__call__and__func__(and any other props).@JelleZijlstra @hauntsaninja what do you think? 🤔