code: def exclude(self, key):
      """
      Create a new table without the specified columns.
  
      :param key:
          Either the name of a single column to exclude or a sequence of such
          names.
      :returns:
          A new :class:`.Table`.
      """
      if not utils.issequence(key):
          key = [key]
  
      selected_column_names = tuple(
          n for n in self._column_names if n not in key
      )
  
      return self.select(selected_column_names)
  
label_desc: Use image node_id 1 for calling a global function with example usage: exclude(key) and returns: self