Pycharm gets error "can't find '__main__' module"

Question

Whenever I try to run script via Virtualenv in pycharm, i get this error:

C:\Users\Costello\PycharmProjects\test\venv\Scripts\python.exe C:/Users/Costello/PycharmProjects/test C:\Users\Costello\PycharmProjects\test\venv\Scripts\python.exe: can't find '__main__' module in 'C:/Users/Costello/PycharmProjects/test' 

Everything works fine via idle, or vs code. I figure it must be something with a way that I have setup my pycharm but have no idea what.

edit: this happens whatever I run, even simple print function.

edit: even with choosing regular python intepreteur, same happens just in pycharm

C:\Users\Costello\AppData\Local\Programs\Python\Python37\python.exe: can't find '__main__' module in 'C:/Users/Costello/PycharmProjects/test' 

Answer 1

Figured out whats wrong. In the configuration window in pycharm, I had to select proper script path:

Answer 2

In your Pycharm:

1. Select Run - Edit Configurations
2. In Configuration tabs, select Module name in option Choose target to run and type your python file's name
3. Click Apply and OK button

Or the simple way is when you run your code for first time (on a new file) just type keyboard Alt+Shift+F10 to run and save the configuration. On the second time (after configuration is saved) just type Alt+F10 to run your code.