Python类的继承

最新推荐文章于 2025-01-05 12:48:20 发布

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一，单继承

1. 创建父类

#coding=utf-8
class Person():
    def __init__(self,name,age,money):
        self.age = age
        self.name = name
        self.__money = money
    def run(self,name):
        print("%s 在跑"%(self.name))
    def GetMoney(self):
        return self.__money
    def SetMoney(self,money):
        if money > 0:
            self.__money = money

PersonObj = Person("test",1,10)
print(PersonObj.name,PersonObj.age)
>>>PersonObj.name = test ,PersonObj.age = 1

2. 创建子类

子类1

#coding=utf-8
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)
        # 子类可以有自己的属性
        self.StuID = StuID

子类2

#coding=utf-8
from selfStudy.qianfeng_teach.ClassInherit.Person import Person
class Teacher(Person):
    def __init__(self,name,age,money):
        # 调用父类中的init
        super(Teacher, self).__init__(name,age,money)

测试代码

#coding=utf-8
from Student import Student
from Teacher import Teacher
# 子类可以直接调用父类的属性，方法
StudentObj = Student("Tom",18,10000,1234567890)
print("StudentObj.name = %s ,StudentObj.age = %d ,StuID = %d"%(StudentObj.name,StudentObj.age,StudentObj.StuID))
>>>PersonObj.name = test ,PersonObj.age = 1
>>>StudentObj.name = Tom ,StudentObj.age = 18 ,StuID = 1234567890
StudentObj.run("Tom")
>>>Tom 在跑

# 子类的隐藏属性不可以直接获取，必须通过Set，Get方法来赋值，取值
print(StudentObj.GetMoney())
>>>10000
StudentObj.SetMoney(10)
print(StudentObj.GetMoney())
>>>10

TeacherObj = Teacher("jarry",37,500000)
print("TeacherObj.name = %s , TeacherObj.age = %d"%(TeacherObj.name,TeacherObj.age))
>>>TeacherObj.name = jarry , TeacherObj.age = 37

二，多继承

创建父类：Father

class Father():
    def __init__(self,Height,Weight):
        self.Height = Height
        self.Weight = Weight
    def PlayGames(self,GameName):
        print("Father is playing %s"%GameName)
    def func(self):
        print("Father Func")

创建父类：Mother

class Mother():
    def __init__(self,FaceValue):
        self.FaceValue = FaceValue

    def EatFood(self,FoodName):
        print("Mother is eating %s"%FoodName)

    def func(self):
        print("Mother Func")

创建子类：Child

from Father import Father
from Mother import Mother

class Child(Mother,Father):
    def __init__(self,Weight,Height,FaceValue):
        Father.__init__(self,Weight,Height)
        Mother.__init__(self,FaceValue)

子类Child多继承

from Child import Child

def main():
    ChildObj = Child(180,90,100)
    print("ChildObj.Weight = %d , ChildObj.Height = %d , ChildObj.FaceValue = %d"%(ChildObj.Weight,ChildObj.Height,ChildObj.FaceValue))
    ChildObj.PlayGames("HunDouLuo")
    ChildObj.EatFood("Noddles")
    # 继承父类中的同名方法时，首先调用的是子类名称括号后面的第一个父类中的方法
    ChildObj.func()
if __name__ == '__main__':
    main()
>>>ChildObj.Weight = 90 , ChildObj.Height = 180 , ChildObj.FaceValue = 100
>>>Father is playing HunDouLuo
>>>Mother is eating Noddles
>>>Mother Func