input: from selenium import webdriver
  from selenium.webdriver.common.keys import Keys
  import time
  
  def automate_login(target_url: str, username_input: str, password_input: str) -> None:
      """Automates the login process on a given website.
      >>> automate_login('http://www.example.com', 'myusername', 'mypassword')
      Login successful!
      """
output:     driver = webdriver.Chrome()
      driver.get(target_url)
      time.sleep(2)
      username = driver.find_element_by_name(username_input)
      password = driver.find_element_by_name(password_input)
      username.send_keys("myusername")
      password.send_keys("mypassword")
      password.send_keys(Keys.RETURN)
      time.sleep(2)
      print("Login successful!")
      driver.quit()