史前第一篇，关于 类 的初次学习

# -*- coding:utf-8 -*-
class China(object):
    """
    Define a base class
    """
    # def __init__(self):
    #     print 'Our country is China'

    def add(self,a,b):
        print 'The base sum is:',a+b

class fuzhou(China):
    """
    Define  a child class
    """
    def jianfa(self,c,d):
        print "result is:",c-d
    def add(self,e,f):
        print "the child SUM is:",e+f

a1 = China()  #实例1
a2 = fuzhou() #实例2
a1.add(1,4)
a2.jianfa(6,3)
a2.add(6,7)
a1.add(1,1)


输出如下：

C:\Python27\python.exe "E:/Project/A3A XL 3G/Python_debug.py"
The base sum is: 5
result is: 3
the child SUM is: 13
The base sum is: 2

Process finished with exit code 0