Ok so I guess you are reading this cuz you wanna use my code. There are some functions that do stuf and thats:

>>> from simple_functions import factorial
>>> factorial(10)
9

and this other part does something. I forget why that I did it:

>>> fibonnaccci(100)
[0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89]

If you can't use it, its kind of your problem, not mine!