code: def download_user_playlists_by_search(self, user_name):
          
  
          try:
              user = self.crawler.search_user(user_name, self.quiet)
          except RequestException as exception:
              click.echo(exception)
          else:
              self.download_user_playlists_by_id(user.user_id)
docs: Download user's playlists by his/her name.
  
          :params user_name: user name.