把p1.name和p2.name换成L1[0],L1[1]为什么排序的结果就不对呢
class Person(object):
pass
p1 = Person()
p1.name = 'Bart'
p2 = Person()
p2.name = 'Adam'
p3 = Person()
p3.name = 'Lisa'
L1 = [p1, p2, p3]
L2 = sorted(L1,lambda p1,p2:cmp(L1[0],L1[1]))
print L2[0].name
print L2[1].name
print L2[2].name
