Simplify computing ports

[bdraco]

What do these changes do?

Simplify computing ports

Are there changes in behavior for the user?

no

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.12%. Comparing base (67c2c02) to head (d48306e).
Report is 291 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1123      +/-   ##
==========================================
- Coverage   95.12%   95.12%   -0.01%     
==========================================
  Files          30       30              
  Lines        4640     4636       -4     
  Branches      411      409       -2     
==========================================
- Hits         4414     4410       -4     
  Misses        200      200              
  Partials       26       26              

Flag	Coverage Δ
CI-GHA	95.08% <100.00%> (-0.01%)	⬇️
MyPy	41.06% <100.00%> (-0.06%)	⬇️
OS-Linux	99.38% <100.00%> (-0.01%)	⬇️
OS-Windows	99.47% <100.00%> (-0.01%)	⬇️
OS-macOS	99.08% <100.00%> (-0.01%)	⬇️
Py-3.10.11	98.97% <100.00%> (-0.01%)	⬇️
Py-3.10.14	99.21% <100.00%> (-0.01%)	⬇️
Py-3.11.9	99.21% <100.00%> (-0.01%)	⬇️
Py-3.12.5	99.21% <100.00%> (-0.01%)	⬇️
Py-3.13.0-rc.1	99.21% <100.00%> (-0.01%)	⬇️
Py-3.8.10	98.92% <100.00%> (-0.01%)	⬇️
Py-3.8.18	99.16% <100.00%> (-0.01%)	⬇️
Py-3.9.13	98.92% <100.00%> (-0.01%)	⬇️
Py-3.9.19	99.16% <100.00%> (-0.01%)	⬇️
Py-pypy7.3.11	99.21% <100.00%> (-0.01%)	⬇️
Py-pypy7.3.16	99.21% <100.00%> (-0.01%)	⬇️
Py-pypy7.3.17	99.24% <100.00%> (-0.01%)	⬇️
VM-macos-latest	99.08% <100.00%> (-0.01%)	⬇️
VM-ubuntu-latest	99.38% <100.00%> (-0.01%)	⬇️
VM-windows-latest	99.47% <100.00%> (-0.01%)	⬇️
pytest	99.38% <100.00%> (-0.01%)	⬇️

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