* Update scoring_functions.py
We can find accuracy by manually if we are not going to use sklearn library.
* Update scoring_functions.py
* Update machine_learning/scoring_functions.py
Co-authored-by: Christian Clauss <cclauss@me.com>
* Tighten up psf/black and flake8
* Fix some tests
* Fix some E741
* Fix some E741
* updating DIRECTORY.md
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>