Here are some free Python file viewer and Python file editor software to help you open PY files on Windows 11/10 PC.

Use the Python Interpreter to Run the Program Once the Python file is saved in Notepad, the programmer can run the Python program using the command line and interpreter.

To make that work, create a “stub” file—a .py file in the top levet of your project that takes the same steps to run your application as the contents of the __main__.py file.