input: Write a function to generate a random password consisting of 8 characters, which can include numbers, letters, and special characters. The function should print the generated password.
  
  import random
  import string
  
  def generate_password():
   password_characters = string.ascii_letters + string.digits + string.punctuation
   password = ''.join(random.choice(password_characters) for i in range(8))
   print(password)
  
  assert type(generate_password())==None
  assert len(generate_password())==0
output: def generate_password():
   password_characters = string.ascii_letters + string.digits + string.punctuation
   password = ''.join(random.choice(password_characters) for i in range(8))
   print(password)