Unresolved reference when importing from sibling sub-package with

Question

I have following similar directory structure.

main.py
pack
   |___sub_pack1
                |__a.py
   |___sub_pack2
                |__b.py

<

Answer 1

Another thing you can do if you're having trouble with "Unsolved reference" errors in PyCharm is:

• Right-click on the Python sources directory
• Select "Mark Directory As" > "Source Root"

Make sure you've done this for all your Python source directories.