new_contents: #!/usr/bin/env python
  
  import argparse
  import logging
  
  from tsg.crawler import crawl_loop
  
  logging.basicConfig(level=logging.INFO)
  
  
  def main():
      parser = argparse.ArgumentParser(description='Crawl one category')
      parser.add_argument('category',
                          choices=['journals', 'authors', 'conferences'])
  
      args = parser.parse_args()
  
  
      crawl_loop(args.category)
  
  
  
  if __name__ == "__main__":
      main()
  
subject: add convenience script for running crawler