input: 
  from selenium import webdriver
  from selenium.webdriver.common.keys import Keys
  import time
  
  def automate_login(website_url: str, username: str, password: str) -> str:
      """ Automates the login process on a given website using Selenium.
      >>> automate_login('http://www.example.com', 'username', 'password')
      'Login successful!'
      """
      # Initialize web driver
      driver = webdriver.Chrome()
      
      # Navigate to the target web page
      driver.get(website_url)
      
      # Locate username field
      username_field = driver.find_element_by_name('username')
      
      # Enter username
      username_field.send_keys(username)
      
      # Locate password field
      password_field = driver.find_element_by_name('password')
      
      # Enter password
      password_field.send_keys(password)
      
      # 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
      result = 'Login successful!'
      
      driver.close()
      return result
  
output:     # Check if login was successful
      try:
          driver.find_element_by_xpath("//*[contains(text(), 'Welcome')]")
      except:
          result = 'Login failed!'
      
      driver.quit()
      return result