input: def generate_password() -> str:
      """Generate a random password of length 8, which consists of alphanumeric 
      characters and at least one special character.
      >>> generate_password()
      'A4b8!q@2'  # Example output, actual password will be different
      """
output:     import random
      import string
  
      characters = string.ascii_letters + string.digits
      special_characters = "!@#$%^&*()_+"
      
      password = ''.join(random.choice(characters) for _ in range(7))
      password += random.choice(special_characters)
      
      password_list = list(password)
      random.shuffle(password_list)
      password = ''.join(password_list)
      
      return password