19、单继承的实现

1、单继承

 

（1）下面的模块在下面定义

• person模块

----------------------------

class Person(object):
    def __init__(self, name, age, money):
        self.name = name
        self.age = age
        self.__money  = money
    def setMoney(self, money):
        #数据的过滤
        if money < 0:
            money = 0
        self.__money = money   #相当于_Person__money

    def getMoney(self):
        return self.__money

    def run(self):
        print("run")

    def eat(self, food):
        print("eat " + food)

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• student模块

from person import Person

class Student(Person):
    def __init__(self, name, age, money, stuId):
        #调用父类中的__init__
        super(Student, self).__init__(name, age,money)

        #子类可以有一些自己独特的属性
        self.stuId = stuId

    def sutFunc(self):
        print(self.__money)
-------------------------------------------------

from person import Person

class Worker(Person):
    def __init__(self, name, age, money):
        #调用父类中的__init__
        super(Worker, self).__init__(name, age, money)
-------------------------------------------------------

“


from person import Person

from student import Student
from worker import Worker



per = Person("aa", 1, 2)



stu = Student("tom", 18, 100008888, 110)
print(stu.name, stu.age)

stu.run()

print(stu.stuId)

#print(stu.__money)#使用属性

print(stu.getMoney()) #通过继承过来的共有方法访问私有属性

#stu.stuFunc()




wor = Worker("lilei", 20, 110)
print(wor.name, wor.age)
wor.eat("apple")


print(per.getMoney())