Factorial

import os
from IPython.core.display import HTML
def load_style(directory = '../../myJupyterTutorial/', name='custom.css'):
        styles = open(os.path.join(directory, name), 'r').read()
        return HTML(styles)
load_style()

def factorial(n):
    fact = 1
    for i in range(n):
        fact = fact*(i+1)
    return fact

factorial(5)

120

list1= [1,2,3,4,5]
list(map(factorial,list1))

[1, 2, 6, 24, 120]