code: def list_checks(ruleset, ruleset_file, debug, json, skip, tag, verbose, checks_paths):
      
      if ruleset and ruleset_file:
          raise click.BadOptionUsage(
              "Options '--ruleset' and '--file-ruleset' cannot be used together.")
  
      try:
          if not debug:
              logging.basicConfig(stream=six.StringIO())
  
          log_level = _get_log_level(debug=debug,
                                     verbose=verbose)
          checks = get_checks(ruleset_name=ruleset,
                              ruleset_file=ruleset_file,
                              logging_level=log_level,
                              tags=tag,
                              checks_paths=checks_paths,
                              skips=skip)
          _print_checks(checks=checks)
  
          if json:
              AbstractCheck.save_checks_to_json(file=json, checks=checks)
      except ColinException as ex:
          logger.error("An error occurred: %r", ex)
          if debug:
              raise
          else:
              raise click.ClickException(str(ex))
      except Exception as ex:
          logger.error("An error occurred: %r", ex)
          if debug:
              raise
          else:
              raise click.ClickException(str(ex))
docs: Print the checks.