How to asterisk a password in python except last 3 letters of password

Is there a simple way to be able to hide my generated password with asterisks but i want the last 3 digits of the password to be visible. How do i do this? I'm also thinking maybe having length as variable isn't a good idea

import string
import random

characters = list(string.ascii_letters + string.digits + "!@#$%^&*()")

i = input('Please enter confirm (input 1) to proceed with username and password creation (or any to quit):\n')
if i == '1':
  print("Generating username and password....") 
  length = int(input("Enter username length: "))
  random.shuffle(characters)
  username = characters[:length]
  print("".join(username))
  genusername = "".join(username)

  length = int(input("Enter password length: "))
  random.shuffle(characters)
  password = characters[:length]
  print("".join(password))
  genpassword = "".join(password) 

else:
    exit