为什么提示：name'__slots__' is not defined
class Person(object):
__slots__ ('name','gender')
def __init__(self,name,gender):
self.name=name
self.gender=gender
class Student(Person):
__slots__('score',)
super(Student,self).__init__(name,gender)
def __init__(self,score):
self.score=score
a=Student('bob','male',96)
print a.score
