input: Write a function to create a Python script for scraping a given website. The function should return the scraped data after processing the HTML content of the website. If the website URL is invalid or the request fails, return an empty string.
  assert scrape_website('<valid website url>')!= ''
  assert scrape_website('<invalid website url>')== ''
  assert scrape_website('')== ''
output: import requests
  from bs4 import BeautifulSoup
  
  def scrape_website(url):
      try:
          response = requests.get(url)
          response.raise_for_status()
          soup = BeautifulSoup(response.text, 'html.parser')
          return soup.get_text()
      except:
          return ''