Compute the factorial of a number in Python

Question

What python function should I use to find the factorial of an integer?

Answer 1

The factorial() function of the math library can be used to compute the factorial of any integer.

The math module of NumPy also has the factorial() function.

Example:

>>> import numpy as np
>>> np.math.factorial(5)
120

>>> import math
>>> math.factorial(5)
120