多态
# !/usr/bin/python3# -*- coding: utf-8 -*-
# @Time : 2023/2/13 21:39
# @Author : xiongming
# @File : duotai.py
# @Desc : 类继承中的多态
class Shape():
def __init__(self, name):
self.name = name
def area(self):
pass
class Square(Shape):
def __init__(self, length):
super().__init__("正方形")
self.length = length
def area(self):
return self.length * self.length
class Circle(Shape):
def __init__(self, radius):
super().__init__("圆形")
self.radius = radius
def area(self):
return 3.14 * self.radius * self.radius
class Triangle(Shape):
def __init__(self, base, height):
super().__init__("三角形")
self.base = base
self.height = height
def area(self):
return self.base * self.height / 2
s = Square(5)
c = Circle(6)
t = Triangle(3, 4)
print(s.name)
print(s.area())
print(c.area())
print(t.area())
class Cat:
def __init__(self, name, age):
self.name = name
self.age = age
def intro(self):
print(f"我是一只猫，我叫{self.name},今年{self.age}岁了。")
def say(self):
print("mua~")
class Dog:
def __init__(self, name, age):
self.name = name
self.age = age
def intro(self):
print(f"我是一只小狗，我叫{self.name},今年{self.age}岁了。")
def say(self):
print("wangwang~~")
class Pig:
def __init__(self, name, age):
self.name = name
self.age = age
def intro(self):
print(f"我是一只小猪，我叫{self.name},今年{self.age}岁了。")
def say(self):
print("oink~~")
c = Cat("web", 4)
d = Dog("小黑", 3)
p = Pig("佩奇", 2)
#多态性表现
def animal(x):
x.intro()
x.say()
animal(c)
animal(d)
animal(p)
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