Python类(四)-多态

多态即一个接口，多种实现

按照平常直接调用

# -*- coding:utf-8 -*-
__author__ = "MuT6 Sch01aR"
 
class Person(object):
    def __init__(self,name):
        self.name = name
 
class Student(Person):
    def talk(self):
        print('%s is studying'%self.name)
 
class Teacher(Person):
    def talk(self):
        print('%s is teaching'%self.name)
 
if __name__ == '__main__':
    Student('John').talk()
    Teacher('Jane').talk()

通过定义函数来实现多态

# -*- coding:utf-8 -*-
__author__ = "MuT6 Sch01aR"
 
class Person(object):
    def __init__(self,name):
        self.name = name
 
class Student(Person):
    def talk(self):
        print('%s is studying'%self.name)
 
class Teacher(Person):
    def talk(self):
        print('%s is teaching'%self.name)
 
def Person_Talk(n):
    n.talk()
 
if __name__ == '__main__':
    s = Student('John')
    t = Teacher('Jane')
    Person_Talk(s)
    Person_Talk(t)

通过父类调用来实现多态

# -*- coding:utf-8 -*-
__author__ = "MuT6 Sch01aR"
 
class Person(object):
    def __init__(self,name):
        self.name = name
 
    @staticmethod
    def Person_Talk(n):
        n.talk()
 
class Student(Person):
    def talk(self):
        print('%s is studying'%self.name)
 
class Teacher(Person):
    def talk(self):
        print('%s is teaching'%self.name)
 
if __name__ == '__main__':
    s = Student('John')
    t = Teacher('Jane')
    Person.Person_Talk(s)
    Person.Person_Talk(t)