How can I add a new built-in function or module to the python interpreter ?

Answer 1

built-in by definition are not custom... built-in are bundled with python, you cannot add new ones to extend them ^^

however, you could upgrade your python interpreter to a new latest version providing new built-in functions/modules, as well as import third party or custom modules and define your own functions ;P

Answer 2

1.you need python ide
2.in python terminal you have to install module by pip install <module name>
3.import module in project by writing import <module name>
4.initialisation