#NEWLINE# def update( self , iter ) : #NEWLINE# #INDENT# cols = list ( iter ) #NEWLINE# self . _all_columns . extend ( ( c for ( label , c ) in cols if ( c not in self . _all_col_set ) ) ) #NEWLINE# self . _all_col_set . update ( ( c for ( label , c ) in cols ) ) #NEWLINE# self . _data . update ( ( ( label , c ) for ( label , c ) in cols ) )