input: from typing import Optional
  
  def generate_random_password() -> Optional[str]:
      """ Generate a random password using a mix of letters, numbers, and characters.
      The password should be 8 characters long.
      >>> generate_random_password()
      'aB3@f7#9'
      >>> generate_random_password()
      'Z2q!R5t%'
      """
      import random
      string = "abcdefghijklmnopqrstuvwxyz01234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*()?"
      password = "".join(random.sample(string, 8))
      return password
output:     import random
      string = "abcdefghijklmnopqrstuvwxyz01234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*()?"
      password = "".join(random.sample(string, 8))
      return password