TypeError: ()正好对应1个参数(3给定)

Given this code:

鉴于这种代码:

sumThree = lambda (x, y, z): (x[0]+ y[0] + z[0], x[1] + y[1] + z[1])
print 'sumThree((1, 2), (3, 4), (5, 6)) = {0}'.format(sumThree((1, 2), (3, 4), (5, 6)))
sumThree = lambda