Every time I open PyCharm I get this message:
No Python interpreter configured for the project.
So I set the interpreter, everything works fine, then I close PyCharm and reopen it, and the message pops up again.
Reinstalling Python and Pycharm didn't fix the problem.
One way you could try is: Run --> Edit Configurations --> set your interpreter there. That "sticks" for me...
If you are opening individual files then try setting the default settings.
File > Default Settings > Project Interpreter.
I think when you are opening individual files you are not loading the project. This sets a default interpreter so opening a file without loading the project should give it this interpreter.
If this doesn't work then open pycharm normally and select the project that you are working on.
I had the same problem, and my solution was the following:
