input: from typing import List
  
  def generate_password() -> str:
      """ Generate a random password of length 8 characters which is a mix of numbers, letters, and special characters.
      >>> generate_password()
      'aB3$1z#Q'
      >>> generate_password()
      '9@xY7!2t'
      """
output:     import random
      import string
      
      characters = string.ascii_letters + string.digits + string.punctuation
      password = ''.join(random.choice(characters) for _ in range(8))
      return password