Python-类与对象-子类扩展父类属性

class Human(object):
    def __init__(self, sex, high):
        self.sex = sex
        self.high = high

class Man(human):
    var = 133
    def __init__(self, sex, high, job):
        super().__init__(sex, high)
        self._job = job
    @property
    def do(self):
        print('he dose %s' % self._job)
    @do.setter
    def do(self, newjob):
        self._job = newjob
    @do.deleter
    def do(self):
        del self._job

class Worker(Man):
    def __init__(self, sex, high, job, name):
        super().__init__(sex, high, job)
        self.name = name
    @property
    def do(self):
        super().do
    @do.setter
    def do(self, duty):
        print('reset the duty for %s' % self.name)
        super(Worker, Worker).do.__set__(self, duty)
    @do.deleter
    def do(self):
        print('delete duty for %s' % self.name)
        super(Worker, Worker).do.__delete__(self)
           

需要注意Worker类下面的super方法调用父类的__set__()以及__delete__()方法，其调用方法super(Worker, Worker).

输出：

如果只想扩展其中的一个属性：

class Worker(Man):
    @Man.do.getter
    def do(self):
        print('getting duty')
        return super().do #super()相当于super(Worker. self)