为什么这样

Question

class Student(object): def __init__(self,name,score):    self.name=name    self.score=score    def __str__(self):        return '(%s,%s)'%s(self.name,self.score)    __repr__=__str__    def __cmp__(self,s): if self.name<s.name: return -1 elif self.name>s.name: return 1 else : return 0 >>> L=[Student('Tim',99),Student('Bob',88),Student('Tom',77)]>>> print sorted(L)[<__main__.Student object at 0x02B23290>, <__main__.Student object at 0x02B23370>, <__main__.Student object at 0x02B233B0>]代码是这样的，在IDE中结果上，为甚？