New submission from Filippo Vicentini <[email protected]>:
Attempting to inspect the signature of a method marked as @staticmethod during
class construction fails.
This happens in 3.8, 3.9.
A MWE is given here:
```python
from typing import signature
def decorator(fun):
print(signature(fun))
return fun
class Test2:
@decorator
@staticmethod
def test(arg):
return arg
```
which fails with error
```python
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 4, in Test
File "<stdin>", line 2, in decorator
File
"/Users/filippovicentini/.pyenv/versions/3.9.7/lib/python3.9/inspect.py", line
3111, in signature
return Signature.from_callable(obj, follow_wrapped=follow_wrapped)
File
"/Users/filippovicentini/.pyenv/versions/3.9.7/lib/python3.9/inspect.py", line
2860, in from_callable
return _signature_from_callable(obj, sigcls=cls,
File
"/Users/filippovicentini/.pyenv/versions/3.9.7/lib/python3.9/inspect.py", line
2259, in _signature_from_callable
raise TypeError('{!r} is not a callable object'.format(obj))
TypeError: <staticmethod object at 0x108865250> is not a callable object
```
----------
components: Library (Lib)
messages: 407715
nosy: PhilipVinc
priority: normal
severity: normal
status: open
title: inspect.signature fails on a @staticmethod
versions: Python 3.8
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Python tracker <[email protected]>
<https://bugs.python.org/issue45988>
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