Fix unused-import to checkdummy-variables-rgx

[RSTdefg]

Type of Changes

	Type
✓	🐛 Bug fix

Description

Fixed unused-import so that it observes the dummy-variables-rgx option. Also added one testcase to test this behavior.

Closes #8500

[codecov]

Codecov Report

Merging #8566 (53a8696) into main (1a1452a) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8566      +/-   ##
==========================================
- Coverage   95.91%   95.91%   -0.01%     
==========================================
  Files         174      174              
  Lines       18370    18369       -1     
==========================================
- Hits        17619    17618       -1     
  Misses        751      751              

Impacted Files	Coverage Δ
pylint/checkers/variables.py	97.16% <100.00%> (-0.01%)	⬇️

[Pierre-Sassoulas]

Pretty good first contribution, thank you ! This also fixed a false positive in pylint which is why the pylint check is failing :)

[RSTdefg]

Pretty good first contribution, thank you ! This also fixed a false positive in pylint which is why the pylint check is failing :)

That's what I figured as well!

[RSTdefg]

Reviewed

[Pierre-Sassoulas]

👌

[github-actions]

🤖 Effect of this PR on checked open source code: 🤖

Effect on psycopg:
The following messages are no longer emitted:

1. unused-import:
   Unused _psycopg imported from psycopg_c as _psycopg
   https://github.com/psycopg/psycopg/blob/ea350698605972d9f941701f3c0e7057c911face/psycopg/psycopg/_cmodule.py#L16

Effect on pytest:
The following messages are no longer emitted:

1. unused-import:
   Unused format_explanation imported from _pytest.assertion.util as _format_explanation
   https://github.com/pytest-dev/pytest/blob/6dcd652d4a55bacda01a15017e155caa816e15a5/src/_pytest/assertion/rewrite.py#L35

This comment was generated for commit 53a8696