generate 4 character alphanumeric random number in python code example

Example 1: how to make a module that generates a random letter in python

# -random letter generator-
import string
var1 = string.ascii_letters

import random
var2 = random.choice(string.ascii_letters)
print(var2)

Example 2: python generate random string

''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(N))