input: Write a function to crawl a website for specific type of data and return the found data. If the website is empty or the data is not found, return an empty list.
  
  def crawl_website_for_phone_numbers(website):
      response = requests.get(website)
      phone_numbers = re.findall('\d{3}-\d{3}-\d{4}', response.text)
      return phone_numbers
  
  assert crawl_website_for_phone_numbers('www.example.com')==['123-456-7890', '987-654-3210']
  assert crawl_website_for_phone_numbers('www.nonexistent.com')==[]
  assert crawl_website_for_phone_numbers('')==[]
output: def crawl_website_for_phone_numbers(website):
      if not website:
          return []
      try:
          response = requests.get(website)
          if response.status_code != 200:
              return []
          phone_numbers = re.findall(r'\d{3}-\d{3}-\d{4}', response.text)
          return phone_numbers
      except:
          return []