#NEWLINE# def add_shot_list_columns( self , id_list ) : #NEWLINE# #INDENT# current_columns = self . _shot_timer_tree . cget ( 'columns' ) #NEWLINE# if ( not current_columns ) : #NEWLINE# #INDENT# self . _shot_timer_tree . configure ( columns = id_list ) #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# self . _shot_timer_tree . configure ( columns = ( current_columns + current_columns ) )