fix specific case of e271 and w504

[hhatto]

Fixes #688

[codecov]

Codecov Report

Attention: Patch coverage is 90.00000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 97.78%. Comparing base (f028951) to head (765402a).

Files	Patch %	Lines
autopep8.py	90.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #748      +/-   ##
==========================================
- Coverage   97.81%   97.78%   -0.04%     
==========================================
  Files           1        1              
  Lines        2431     2441      +10     
==========================================
+ Hits         2378     2387       +9     
- Misses         53       54       +1     

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