使用pytest时无法在同一目录中导入模块

Question

I am having a problem running pytest in a situation when my app calls another script in the same directory. Here is my directory structure:

├── my_project/
│   ├── application/
│   |   ├──__init__.py
│   |   ├──app.py
│   |   ├──utils.py   
│   ├── application_test/
│   |   ├── __init__.py
│   │   ├── unit_test.py

The code in app.py has the statement: from utils import func1, func2, func3 and this works fine when I run $ python app.py . However, when I run $ py.test from the my_project directory level, I get the error "ModuleNotFoundError: No module named 'utils'." The errors comes from this line in unit_test.py :

import application.app

Because that line triggers app.py which then tries to import from utils.py and somehow app.py does not see the utils.py file even though it is in the same directory.

I have tried using $ python -m pytest application_test , as well as having __init__.py in the root and without, but none of these or other answers on stackoverflow seem to work.

Answer 1

It appears that import statements are relative to the directory you are currently in. The solution to calling another script in the same directory is to use relative imports. In this case, from .utils import func1, func2, func3 worked!