Search more about:

pytest (https://docs.pytest.org/) x unittest
Fixtures e.g. @pytest.fixture(scope="module")
Parametrizing
hypothesis (https://github.com/equinor/camille/blob/c60e767eb4802a6a9c0b9134bdd5940620ed410b/tests/process/test_lidar.py#L107), https://hypothesis.readthedocs.io/en/latest/
pytest-timeout (https://pypi.org/project/pytest-timeout/)
Monkeypatching (https://docs.pytest.org/en/stable/monkeypatch.html)
mock side effects
test coverage (codecov), in PR
mutation testing (time consuming) mutmut (petroelastic example 6000 mutations, time consuming, at night Andreas team)
@property
integration test (NASA example)
triangle testing: units/functional/integration (time, coverage) https://www.softwaretestinghelp.com/the-difference-between-unit-integration-and-functional-testing/

Problems solved

Testing in VSC was different from pycharm: https://stackoverflow.com/questions/65577254/python-module-import-statement-runs-in-pycharm-but-not-in-vscode
"python -m venv tdd_venv" leads to "Error: [WinError 1260] This program is blocked by group policy. For more information, contact your system administrator"