Python is supported, and testing is all done in pytest. To install it, run this:
pip install -U pytest
Running files is extremely easy. Just use this command:
python <path-to-file>
To run a test, put the -u option before <path-to-file>, or replace python with pytest, like this:
pytest <path-to-file>
Make sure you are in the same directory as the test file before running the test.