PyCharm error: 'No Module' when trying to import own module (python script)

Question

I have written a module (a file my_mod.py file residing in the folder my_module). Currently, I am working in the file cool_script.py t

Answer 1

The key confusing step that must be done is to recreate the run configuration for the source file that you're trying to execute, so that the IDE picks up the new paths.

The way that actually worked for me was to go to Run/Edit Configurations..., select the configuration for the file that you're trying to run on the left side, uncheck the "Add source roots to PYTHONPATH" box, save, and then go back and check the box and save. THEN it would work.