PyCharm can't find import in same folder

Question

I'm using PyCharm and I'm importing some constants from another python file in the same directory. The import works at runtime, but I get this annoying red underline on the import statement and also every time I use a constant from the file.

Here's the file hierarchy

(Please ignore the red underlining on the folders, they are unrelated to this)

What causes this behaviour and how can I fix it?

Answer 1

It is better if you replace that with:

from pca_mixtures.constants import *

The issue is because of how PyCharm sets PYTHONPATH to the root of your project.

While you can add directories as Sources , I would not recommended. That will make your project fragile.

Answer 2

You can right click pca_mixtures and then mark the directory as Sources Root , this should solve your problem. Good luck!

Answer 3

You can use from .constants import * . Always check if you're able to control+click/ cmd+click to your imported file