input: from selenium import webdriver
  from selenium.webdriver.common.keys import Keys
  import time
  
  def automate_login(website_url: str, username_text: str, password_text: str) -> None:
      """Automates the login process for a given website.
      >>> automate_login('http://www.example.com', 'username', 'password')
      Login successful!
      """
      driver = webdriver.Chrome()
      driver.get(website_url)
      username = driver.find_element_by_name('username')
      username.send_keys(username_text)
      password = driver.find_element_by_name('password')
      password.send_keys(password_text)
      submit_button = driver.find_element_by_name('submit')
      submit_button.click()
      time.sleep(5)
      print('Login successful!')
      driver.close()
output:     driver = webdriver.Chrome()
      driver.get(website_url)
      username = driver.find_element_by_name('username')
      username.send_keys(username_text)
      password = driver.find_element_by_name('password')
      password.send_keys(password_text)
      submit_button = driver.find_element_by_name('submit')
      submit_button.click()
      time.sleep(5)
      print('Login successful!')
      driver.close()