Sometimes we may want to test scripts that can’t be imported as packages and live in different directories than the tests directory. The easiest way to make our src code directory discoverable at runtime is to update Python’s sys.path. We can do that through pytest config file as follows:
[pytest]
...
testpaths = tests
pythonpath = src
...This will add src directory to the sys.path. This is relative to pytest.ini file. Also, by default, pytest add tests directory to the sys.path, but we’re here explicit about what is the tests path.