这里为何self.score > s.score ,return值为-1，若为1，则score值大的却排在后面
class Student(object):
def __init__(self, name, score):
self.name = name
self.score = score
def __str__(self):
return '(%s: %s)' % (self.name, self.score)
__repr__ = __str__
def __cmp__(self, s):
if self.score > s.score:
return -1
elif self.score < s.score:
return 1
elif self.score == s.score:
if self.name > s.name:
return 1
else:
return -1
return 0
L = [Student('Tim', 99), Student('Bob', 88), Student('Alice', 99)]
print sorted(L)
