input: 
  def automate_login(url: str, username: str, password: str) -> None:
      """Automate the login process for a given website using Selenium.
      >>> automate_login('http://www.example.com', 'testuser', 'testpass')
      Login successful!
      """
  
output:     
      from selenium import webdriver
      from selenium.webdriver.common.by import By
      from selenium.webdriver.common.keys import Keys
      import time
  
      driver = webdriver.Chrome()
      driver.get(url)
  
      time.sleep(2)
  
      username_field = driver.find_element(By.NAME, 'username')
      password_field = driver.find_element(By.NAME, 'password')
  
      username_field.send_keys(username)
      password_field.send_keys(password)
  
      password_field.send_keys(Keys.RETURN)
  
      time.sleep(2)
  
      if "Login successful!" in driver.page_source:
          print("Login successful!")
      else:
          print("Login failed!")
  
      driver.quit()
  