PATH issue with pytest 'ImportError: No module named YadaYadaYada'

python unit-testing pytest
MattoTodd picture MattoTodd · Apr 20, 2012 · Viewed 186.6k times · Source

I used easy_install to install pytest on a mac and started writing tests for a project with a file structure likes so:

repo/
repo/app.py
repo/settings.py
repo/models.py
repo/tests/
repo/tests/test_app.py

run py.test while in the repo directory, everything behaves as you would expect

but when I try that same thing on either linux or windows (both have pytest 2.2.3 on them) it barks whenever it hits its first import of something from my application path. Say for instance from app import some_def_in_app

Do I need to be editing my PATH to run py.test on these systems? Has Anyone experienced this?

Answer

Apteryx picture Apteryx · Dec 7, 2015

I'm not sure why py.test does not add the current directory in the PYTHONPATH itself, but here's a workaround (to be executed from the root of your repository):

python -m pytest tests/

It works because Python adds the current directory in the PYTHONPATH for you.

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