Format Python code with psf/black push

[github-actions]

There appear to be some python formatting errors in 472a980. This pull request
uses the psf/black formatter to fix these issues.

[codecov]

Codecov Report

Merging #355 (472a980) into dev (472a980) will not change coverage.
The diff coverage is n/a.

❗ Current head 472a980 differs from pull request most recent head 6e8806b. Consider uploading reports for the commit 6e8806b to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #355   +/-   ##
=======================================
  Coverage   90.10%   90.10%           
=======================================
  Files          22       22           
  Lines        2243     2243           
=======================================
  Hits         2021     2021           
  Misses        222      222           

Flag	Coverage Δ
unittests	90.10% <0.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 472a980...6e8806b. Read the comment docs.