Password Generator With Python

import random
lower = "abcdefghijklmnopqrstuvwxyz"
upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
number = "0123456789"
symbol = "!@#$%^&*"
string = lower + upper + number + symbol
length = 21
password = "".join(random.sample(string,length))
print("Here is your new password: " + password)