import random
import string

def randomPwd(length):
    chars = string.ascii_letters + string.digits
    pwd = ''.join(random.choice(chars) for i in range(length))
    print(pwd)

randomPwd(18)
randomPwd(18)
randomPwd(18)
randomPwd(18)
randomPwd(18)
randomPwd(18)
randomPwd(18)
randomPwd(18)
randomPwd(18)
randomPwd(18)
randomPwd(18)