Attributes added by a decorator are raised as missing members errors #3957
Description
Steps to reproduce
# test.py
import functools
from typing import Callable, NamedTuple
class Module(NamedTuple):
init: Callable
apply: Callable
def module(module_maker):
@functools.wraps(module_maker)
def fabricate_module(*args, **kwargs):
init, apply = module_maker(*args, **kwargs)
return Module(init, apply)
return fabricate_module
@module
def my_module():
def my_module_init(x_in):
return x_in
def my_module_apply(x_in):
return x_in
return my_module_init, my_module_apply
mod = my_module()
INPUT_X = 0.
mod.init(INPUT_X)
mod.apply(0.)!python test.py
# no errors!pylint test.py --disable "C0114,C0115,C0116"
# outputs:
# test.py:26:0: E1101: Instance of 'tuple' has no 'init' member (no-member)
# test.py:27:0: E1101: Instance of 'tuple' has no 'apply' member (no-member)You can also try it at:
https://colab.research.google.com/drive/1Jsgd_vVWIjVj7gqWKNsi6pOYNsP6l5uV#scrollTo=BfnN70BAt1Mi
Current behavior
pylint is returning a warning that mod does not have init or apply members.
Expected behavior
I would expect pylint to recognize that mod has an init and apply attribute, and not output those problems
pylint --version output
pylint 2.6.0
astroid 2.4.2
Python 3.6.9 (default, Oct 8 2020, 12:12:24)
[GCC 8.4.0]