Manually adding it as you have done is indeed one way of doing this, but there is a simpler method, and that is by simply telling pycharm that you want to add the src folder as a source root, and then adding the sources root to your python path.
This way, you don’t have to hard code things into your interpreter’s settings:
Add src as a source content root:
Then make sure to add add sources to your PYTHONPATH under:
Preferences ~ Build, Execution, Deployment ~ Console ~ Python Console
Now imports will be resolved:
This way, you can add whatever you want as a source root, and things will simply work. If you unmarked it as a source root however, you will get an error:
After all this don’t forget to restart. In PyCharm menu select: File –> Invalidate Caches / Restart
check for __init__.py file in src folder
add the src folder as a source root
Then make sure to add add sources to your PYTHONPATH (see above)
in PyCharm menu select: File –> Invalidate Caches / Restart