Small cleanups

[akx]

Ran PyCharm's "Inspect Code" and found a bunch of actionable things. (And a bunch of less actionable ones, which were thus not actioned upon.)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.33%. Comparing base (8e10fb5) to head (7a576d2).
Report is 13 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1170      +/-   ##
==========================================
+ Coverage   91.31%   91.33%   +0.01%     
==========================================
  Files          27       27              
  Lines        4653     4650       -3     
==========================================
- Hits         4249     4247       -2     
+ Misses        404      403       -1     

Flag	Coverage Δ
macos-14-3.10	90.34% <100.00%> (+0.01%)	⬆️
macos-14-3.11	90.27% <100.00%> (+0.01%)	⬆️
macos-14-3.12	90.49% <100.00%> (+0.01%)	⬆️
macos-14-3.13	90.49% <100.00%> (+0.01%)	⬆️
macos-14-3.8	90.20% <100.00%> (+0.01%)	⬆️
macos-14-3.9	90.27% <100.00%> (+0.01%)	⬆️
macos-14-pypy3.10	90.34% <100.00%> (+0.01%)	⬆️
ubuntu-24.04-3.10	90.36% <100.00%> (+0.01%)	⬆️
ubuntu-24.04-3.11	90.30% <100.00%> (+0.01%)	⬆️
ubuntu-24.04-3.12	90.51% <100.00%> (+0.01%)	⬆️
ubuntu-24.04-3.13	90.51% <100.00%> (+0.01%)	⬆️
ubuntu-24.04-3.8	90.23% <100.00%> (+0.01%)	⬆️
ubuntu-24.04-3.9	90.29% <100.00%> (+0.01%)	⬆️
ubuntu-24.04-pypy3.10	90.36% <100.00%> (+0.01%)	⬆️
windows-2022-3.10	90.37% <100.00%> (+0.01%)	⬆️
windows-2022-3.11	90.31% <100.00%> (+0.01%)	⬆️
windows-2022-3.12	90.52% <100.00%> (+0.01%)	⬆️
windows-2022-3.13	90.52% <100.00%> (+0.01%)	⬆️
windows-2022-3.8	90.34% <100.00%> (+0.01%)	⬆️
windows-2022-3.9	90.30% <100.00%> (+0.01%)	⬆️
windows-2022-pypy3.10	90.37% <100.00%> (+0.01%)	⬆️

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[tomasr8]

LGTM :)