py.test - Error collecting when 2 conftest.py in different directories

Question

We using py.test. We try to put different conftest.py files in different folders to split our fixtures:

tests/api/
├── conftest.py
├── folder1
│   └── conftest.py
├── folder2
│   └── conftest.py

But when run the tests this error occurs:

____ ERROR collecting api/folder1/conftest.py ____
import file mismatch:
imported module 'conftest' has this __file__ attribute:
  /tests/api/folder2/conftest.py
which is not the same as the test file we want to collect:
  /tests/api/folder1/conftest.py
HINT: remove __pycache__ / .pyc files and/or use a unique basename for your test file modules

Why is that? How fix it?

PS. Removing __pycache__.pyc did not help.

PPS. __init__.py files already exist in each folder.

Answer 1

I had the same issue. To solve this you need to create python packages instead of directories. Then pytest will look at the conftest.py in your package instead of root directory. Hope, this will help you. tests/api/ ├── conftest.py ├── package1 # not folder │ └── conftest.py ├── package2 # not folder │ └── conftest.py