input: def generate_password():
      """
      Generate a random password composed of 8 characters, consisting of numbers, letters, and special characters.
      >>> generate_password()
      %1jkA!$&
      >>> generate_password()
      jf#@84zE
      >>> generate_password()
      2W_p9a*b
      """
output:     import random
      import string
  
      characters = string.ascii_letters + string.digits + string.punctuation
      password = ''.join(random.choice(characters) for _ in range(8))
      return password