Random 5 Character String Generation

import os
import string
import random

#Created by DecstarG

i = 0
string = ""

while string != "Fifty":

    chars = "qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM"
    random.seed = (os.urandom(1024))
    string = ''.join(random.choice(chars) for i in range(1, 6))
    print("Output number " + str(i) + ": " + string)
    i = i + 1