input: def login_automation(website_url: str, username_input: str, password_input: str) -> None:
      """ Automates the login process on a given website using Selenium.
      >>> login_automation('http://www.example.com', 'username', 'password')
      Login successful!
      """
      from selenium import webdriver
      from selenium.webdriver.common.keys import Keys
      import time
  
      # Initialize web driver
      driver = webdriver.Chrome()
  
      # Navigate to the target web page
      driver.get(website_url)
  
      # Locate username field
      username = driver.find_element_by_name('username')
  
      # Enter username
      username.send_keys(username_input)
  
      # Locate password field
      password = driver.find_element_by_name('password')
  
      # Enter password
      password.send_keys(password_input)
  
      # Locate submit button
      submit_button = driver.find_element_by_name('submit')
  
      # Click submit button
      submit_button.click()
  
      # Wait for login process to complete
      time.sleep(5)
  
      # Login successful
      print('Login successful!')
  
      driver.close()
output:     # Check if login was successful
      try:
          driver.find_element_by_id('login_success')
      except:
          print('Login failed!')
          driver.close()
          return
  
      # Close the browser
      driver.close()