Hi, I'm trying to configure the no-docstring-rgx option to ignore function and class names that: - Starts with _ - Starts with test_ - Ends with tests - Ends with Tests I came up with the following regular expression: (^(test)?_)|((T|t)ests$) When I test the regular expression on https://regex101.com/r/3BXmsa/6, it matches the text I expect it to match. However, when I run pylint against my code, it still reports a docstring is missing for a class name that ends with Tests. For example, if I have the following python 3 code. import unittest class _Utils(unittest.TestCase): pass class Test_Foo(unittest.TestCase): pass class test_Foo(unittest.TestCase): pass class UtilsTests(unittest.TestCase): def test_function_name(self): pass def _foo(self): pass def my_tests(self): pass if __name__ == "__main__": unittest.main() Running pylint --disable=all --enable=missing-docstring --no-docstring-rgx='(^(test)?_)|((T|t)ests$)' ./test.py yields $ pylint --disable=all --enable=missing-docstring --no-docstring-rgx='(^(test)?_)|((T|t)ests$)' ./test.py ************* Module test test.py:1:0: C0111: Missing module docstring (missing-docstring) test.py:8:0: C0111: Missing class docstring (missing-docstring) test.py:16:0: C0111: Missing class docstring (missing-docstring) test.py:24:4: C0111: Missing method docstring (missing-docstring) ------------------------------------------------------------------ Your code has been rated at 7.50/10 (previous run: 7.50/10, +0.00) I was only expecting to see the Missing module docstring violation, and the missing class docstring on line 8. Here is my environment: $ pylint --version pylint 2.3.1 astroid 2.2.5 Python 3.7.3 (default, Mar 27 2019, 09:23:15) [Clang 10.0.1 (clang-1001.0.46.3)] Any ideas what is going on and how to fix it? Cheers, Bassam --- "What we can or cannot do, what we consider possible or impossible, is rarely a function of our true capability. It is more likely a function of our beliefs about who we are." - Tony Robbins