code: def create_as_library(cls, url):
          
          site = {
              "crawler": "Download",
              "url": url
          }
          cfg_file_path = os.path.dirname(__file__) + os.path.sep + 'config' + os.path.sep + 'config_lib.cfg'
          return cls(cfg_file_path, site, 0, False, False, True)
docs: Creates a single crawler as in library mode. Crawling will start immediately.
          :param url:
          :return: