old_contents: from .core import crawl
  
  if __name__ == '__main__':
      pass
  
new_contents: import argparse
  
  from .core import Crawler
  
  
  if __name__ == '__main__':
      parser = argparse.ArgumentParser(
          description='Crawl a website and prints the associated site map'
      )
      parser.add_argument(
          'domain', type=str,
          help='The domain of the site to crawl'
      )
      args = parser.parse_args()
      crawler = Crawler(args.domain)
      print crawler.crawl()
  
subject: Add arg parser