input: def generate_password():
      """ Generate a random password composed of 8 characters, including numbers, letters, and special characters.
      >>> generate_password()
      None
      """
      password_characters = string.ascii_letters + string.digits + string.punctuation
      password = ''.join(random.choice(password_characters) for i in range(8))
      print(password)
output:     import random
      import string