input: 
  import random
  import string
  
  def generate_password() -> None:
      """ Generate a random password consisting of 8 characters (numbers, letters, and special characters).
      >>> generate_password()
      'A3b$c9!2'   # Example output, actual password will vary
      """
  
output:     characters = string.ascii_letters + string.digits + string.punctuation
      password = ''.join(random.choice(characters) for _ in range(8))
      print(password)