code: def get(keys):
      
      _config = GlobalConfigManager.get_config_or_default()
  
      if not keys:
          return
  
      print_values = {}
      for key in keys:
          if hasattr(_config, key):
              print_values[key] = getattr(_config, key)
          else:
              click.echo('Key `{}` is not recognised.'.format(key))
  
      dict_tabulate(print_values, )
docs: Get the global config values by keys.
  
      Example:
  
      \b
      ```bash
      $ polyaxon config get host http_port
      ```