# 数据描述符
class DataDes:
def __init__(self, default=0):
self._score = default
def __set__(self, instance, value):
self._score = value
def __get__(self, instance, owner):
print("访问数据描述符里的 __get__")
return self._score
# 非数据描述符
class NoDataDes:
def __init__(self, default=0):
self._score = default
def __get__(self, instance, owner):
print("访问非数据描述符里的 __get__")
return self._score
class Student:
math = DataDes(0)
chinese = NoDataDes(0)
def __init__(self, name, math, chinese):
self.name = name
self.math = math
self.chinese = chinese
def __getattribute__(self, item):
print("调用 __getattribute__")
return super(Student, self).__getattribute__(item)
def __repr__(self):
return "<Student: {}, math:{}, chinese: {},>".format(
self.name, self.math, self.chinese)
