code: def database_download(self, output_file, target_url, database_path, complete=False):
          
          # Create a file to store the logs; it will be used to determine if the database was downloaded and set-up
          completefile = os.path.join(database_path, 'complete')
          if not os.path.isfile(completefile):
              self.url_request(target_url=target_url,
                               output_file=output_file)
              if complete:
                  # Create the completefile
                  with open(completefile, 'w') as complete:
                      complete.write('')
docs: Check to see if the download has previously been completed. Run the download if necessary. Create the
          completefile if required
          :param output_file: Name and path of local copy of downloaded target
          :param target_url: URL of the target to download
          :param database_path: Path on the local filesystem in which the file is to be downloaded
          :param complete: Boolean to determine whether a completefile should be created