fix: don't overload primitives

[peppelinux]

this PR removes the overload of the primitive str

generally, it would be preferable avoid also variables with single char names, like b or any other that might overload pdb commands

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.33%. Comparing base (69fed0a) to head (f557be4).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #173      +/-   ##
==========================================
+ Coverage   76.24%   76.33%   +0.08%     
==========================================
  Files          44       44              
  Lines        4484     4484              
  Branches      984      839     -145     
==========================================
+ Hits         3419     3423       +4     
  Misses        777      777              
+ Partials      288      284       -4     

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[jschlyter]

IIRC there are ruff rules that can be enabled to catch things like this.