Python继承的代码示例

#单继承
class Person(object):
    def __init__(self,name,age,height,weight):
        self.name = name
        self.age = age
        self.height = height
        self.weight = weight
    def eat(self):
        print("eating")
    def walk(self):
        print("walking")
    def __str__(self):
        return "name:%s,age:%d"%(self.name,self.age)
from person import Person
class Student(Person):
    def __init__(self,name,age,height,weight):
        #调用父类中的属性
        super(Student,self).__init__(name,age,height,weight)
    def studey(self):
        print("studying")
from student import Student
stu = Student("tom",25,252,63)
print(stu.name)

#多继承
注意，当self.money = money编程私有属性时，即self.__money会出现报错现象
，说明私有属性不能直接继承
class Father(object):
    def __init__(self,money):
        self.money = money
    def eat (self):
        print("eating")
    
class Mother(object):
    def __init__(self,facevalue):
        self.facevalue = facevalue
    def sleep(self):
        print("slepping")
       
from father import Father
from mother import Mother
class Child(Father,Mother):
    def __init__(self,money,facevalue):
        Father.__init__(self,money)
        Mother.__init__(self,facevalue)
    def study(self):
        print("studing")
    
 from child import Child
def main():
    ch = Child(5,"NICE")
    print(ch.money,ch.facevalue)
if __name__=='__main__':
    main()

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