For the operating system to understand that the file should be read as a Python program, the programmer needs to save the file as a Python file, with the ".py" extension.

Take control of multiple Python installations in Windows with the py launcher, available as part of a standard Python installation.

Simply create a new .py file in the same folder as your main Python code. Then “import” that file as you now know how to do, then access the functions from within that module.

And there you can see Python.exe. This means that Python is installed on your computer. Read Next: How to open and view Python PY files on Windows PC.