input: Write a function to create a Python script that scrapes a given website. The function should take a URL as input and return the HTML content of the web page. Include assertion tests to validate the function.
  assert scrape_website('<your website url>') == '<expected HTML content>'
  
  import requests
  from bs4 import BeautifulSoup
  
  def scrape_website(url):
      page = requests.get(url)
      soup = BeautifulSoup(page.text, 'html.parser')
      return soup.prettify()
  
  assert scrape_website('<your website url>') == '<expected HTML content>'
output: import requests
  from bs4 import BeautifulSoup
  
  def scrape_website(url):
      page = requests.get(url)
      soup = BeautifulSoup(page.text, 'html.parser')
      return soup.prettify()