input: def crawl_website_for_phone_numbers(website: str) -> list:
      """ Given a website URL, crawl the website and extract all phone numbers 
      formatted as `\d{3}-\d{3}-\d{4}`.
      >>> crawl_website_for_phone_numbers('www.example.com')
      ['123-456-7890', '987-654-3210']
      """
output:     
      import re
      import requests
      from bs4 import BeautifulSoup
  
      response = requests.get(website)
      soup = BeautifulSoup(response.text, 'html.parser')
      phone_numbers = re.findall(r'\d{3}-\d{3}-\d{4}', soup.get_text())
      return phone_numbers
  