input: 
  import random
  import string
  
  def generate_password():
      """Generate a random password consisting of 8 characters, including numbers, letters, and special characters.
      Example:
      >>> generate_password()
      "a8#!fG9x"
      >>> generate_password()
      "3kJ*&1dP"
      """
      password_characters = string.ascii_letters + string.digits + string.punctuation
      password = ''.join(random.choice(password_characters) for i in range(8))
      print(password)
  
output:     return password