python: 多态与虚函数;

时间:2024-08-24 11:06:20

通过python的abc模块能够实现虚函数;

首先在开头from abc import   ABCMeta, abstractmethod

例子 :

#!/usr/bin/python
#coding=utf-8 from abc import ABCMeta, abstractmethod
class Base():
__metaclass__=ABCMeta          #必须先声明 def __init__(self):
pass
@abstractmethod              #虚函数
def get(self):
print 'base get'
pass
class Derivel(Base):
def get(self):
print "Derivel get" class Derivel2(Base):
def get(self):
print "Derivel2 get" A = Derivel()
B = Derivel2()
A.get()
B.get()