Question: How can I import some variable from parent conftest.py when I have another conftest.py in local directory.

[thakkardharmik]

Lets say I have the directory structure as follow -

Parent
|________ __init__.py
|________ conftest.py
|________ A
|________ B
               |______ __init__.py
               |______ conftest.py
               |______ test_a.py

Is there a way I can import some variable from Parent conftest.py in test_a.py.

[RonnyPfannschmidt]

your in your example normal python import ruls apply

so in test_a.py a from ..conftest import * sould suffice

note that commonly its considered "bad" to do imports from conftests - if you could outline your use-case in more detail we might be able to propose a solution which is considered more elegant by the pytest developers

[thakkardharmik]

@RonnyPfannschmidt If I try to use ...conftest it throws error saying ValueError: Attempted relative import beyond toplevel package. This error is seen for with n number of dots. If I dont put the dots its says variable not found.

[nicoddemus]

This works for me:

├──parent
│  ├──B
│  │  ├  conftest.py
│  │  ├  test_a.py
│  │  └  __init__.py
│  ├  conftest.py
│  └  __init__.py
└  pytest.ini

# parent/B/test_a.py
from ..conftest import V

def test_a():
    assert V == 1

# parent/conftest.py
V = 1

================================================= test session starts =================================================
platform win32 -- Python 3.6.3, pytest-3.4.2.dev23+g14a9b1e, py-1.5.2, pluggy-0.6.1.dev
rootdir: C:\pytest\.tmp\import, inifile: pytest.ini
plugins: forked-0.2, hypothesis-3.38.9
collected 1 item
parent\B\test_a.py .                                                                                             [100%]

============================================== 1 passed in 0.01 seconds ===============================================
Process finished with exit code 0

Can you provide a minimal reproducible example?

[thakkardharmik]

@nicoddemus @RonnyPfannschmidt It worked for me. I had missing init.py in parent directory.