1

This is what my project looks like (oversimplified):

root/
├── test/
|   └── test_code.py
└── code.py

Whenever I run pytest standing in root/ I get ImportError : Attempted relative import with no known parent package.

If I move test_code.py out to root/ everything works fine. But this is not an option since I have many modules and that is why I need to put ALL test modules inside a test-folder for organizing.

I am using VSCode and the weird thing is: VSCode finds my imported functions inside test_code.py.

from ..code import func - if I right-click on func VSCode jumps up to code.py outside of test-folder.

When I try to run test_code.py directly in VSCode I get ValueError: attempted relative import beyond top-level package.

How can VSCode find my imported functions but cannot run them and pytest cannot run them either?

  • I have tried adding __init__.py to make root/ a package.
  • I have tried adding .env as stated here.

Solution

  1. I moved code.pyinto src/ and added __init__.py files in each folder to let Python know that test/ and src/ are packages:
root/
├── test/
|   ├── __init__.py
|   └── test_code.py
└── src/
    ├── __init__.py
    └── code.py
  1. I had to use absolute imports in all files: from folder.file import function. Read about absolute vs. relative imports here. If you open your code in root - VSCode will now find your imports!

This is what test_code.py looks like:

from src.code import func

Finally, running pytest works! If you want to run code.py from terminal you have to run: $ python3 -m src.code

w1cked
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2 Answers2

0

I suggest you try like this:

  • in root, create a directory src and move code.py into it

  • create an empty __init__.py file in both test and src directories

  • in your test_code.py file, try replacing:

    • from ..code import func
    • with from src.code import func

  • make sure root is the current working directory

Now, you should be able to run your script from VS code and running pytest . from your terminal should also work.

Laurent
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  • Thank you, I did exactly as you suggested. I had to import in this way for VSCode to find everything: from ..src.code import func. Now when I run from VSCode or through pytest I get same error: ValueError: attempted relative import beyond top-level package. – w1cked Jun 29 '21 at 07:46
  • Additional comment: I tried to run: `python3 -m pytest` and get the same error. – w1cked Jun 29 '21 at 08:10
0

Solution

  1. I moved code.pyinto src/ and added __init__.py files in each folder to let Python know that test/ and src/ are packages:
root/
├── test/
|   ├── __init__.py
|   └── test_code.py
└── src/
    ├── __init__.py
    └── code.py
  1. I had to use absolute imports in all files: from folder.file import function. Read about absolute vs. relative imports here. If you open your code in root - VSCode will now find your imports!

This is what test_code.py looks like:

from src.code import func

Finally, running pytest works! If you want to run code.py from terminal you have to run: $ python3 -m src.code

w1cked
  • 35
  • 8