W605 error while checking docstrings with regex inside it

[smartfin]

The bug is reproduced if you are using regex expression inside docstring with escaping of characters.

Here is example of code:

import re


def test_regex_function():
    """
    Return compiled regex of which allows to process only specific file
    paths or extensions, e.g. r"^.*\.svg$".
    :return:
    """
    return re.compile(r"^.*\.svg$")

And result of running pycodestyle 2.4.0:

pycodestyle 1.py   
                                                                                                                                                
1.py:9:-23: W605 invalid escape sequence '\.'

[FichteFoll]

Duplicate of #795 (and fixed in master).

[sigmavirus24]

Well noticed @FichteFoll

Duplicate of #795