a linux executable can be found in the releases section or bundled with the source code
on other operating systems, you can either run the python file or package it along with the ico into an compatible executable using tools like pyinstaller
python3 -m PyInstaller -F --noconsole --icon=pythom.ico --onefile pythom.py
pass a python file as an argument
if using the executable
./pythom pythonFile.py
if using the pythom python file
python3 pythom.py pythonFile.py