#NEWLINE# def _update_column_attribute_changed( self , column , idx , attr , old_value , new_value ) : #NEWLINE# #INDENT# '\n        Update how the data is formatted depending on changes to column\n        attributes initiated by the user through the `Column` interface.\n\n        Dispatches column attribute change notifications to individual methods\n        for each attribute ``_update_column_<attr>``\n        ' #NEWLINE# method_name = '_update_column_{0}' . format ( attr ) #NEWLINE# if hasattr ( self , method_name ) : #NEWLINE# #INDENT# getattr ( self , method_name ) ( column , idx , old_value , new_value )