Closed
Description
Steps to reproduce
Given a file a.py:
# pylint: disable=missing-docstring
from typing import Iterator, MutableMapping, Optional
class PylintTestMap(MutableMapping[str, str]):
config: MutableMapping[str, str] = dict()
def __getitem__(self, item: str) -> Optional[str]:
return self.config.get(item)
def __len__(self) -> int:
return len(self.config)
def __iter__(self) -> Iterator[str]:
return iter(self.config)
def __setitem__(self, key: str, value: str) -> None:
self.config[key] = value
def __delitem__(self, key: str) -> None:
del self.config[key]Current behavior
Result of pylint a.py:
************* Module a
a.py:7:0: R0901: Too many ancestors (8/7) (too-many-ancestors)
------------------------------------------------------------------
Your code has been rated at 9.23/10 (previous run: 9.23/10, +0.00)
Expected behavior
No warning about ancestors
pylint --version output
Result of pylint --version output:
pylint 2.7.2
astroid 2.5.1
Python 3.9.1
This behaviour has been introduced with pylint 2.7.2. pylint 2.7.1 does not show this warning.