palette = map ( lambda a : ( a , a , a ) , range ( 256 ) ) palette = map ( lambda ( r , g , b ) : chr ( r ) + chr ( g ) + chr ( b ) , palette ) palette = map ( lambda r : r , palette ) palette = lambda ( r , g , b ) : r palette = lambda ( r ) : r palette = lambda r : r palette = ( lambda ( r ) : r , palette )