What's the best way to generate random strings of a specific length in Python?

Question

For a project, I need a method of creating thousands of random strings while keeping collisions low. I\'m looking for them to be only 12 characters long and uppercase only.

Answer 1

#!/bin/python3
import random
import string
def f(n: int) -> str:
        bytes(random.choices(string.ascii_uppercase.encode('ascii'),k=n)).decode('ascii')

run faster for very big n. avoid str concatenate.