class Student(object):
count = 0
def __init__(self, name):
self.name = name
Student.count = Student.count + 1
不加Student.前缀，它怎么知道你定义的是对象self的count还是类本身的count
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zhr305
class Student(object):
count = 0
def __init__(self, name):
self.name = name
Student.count = Student.count + 1