python面向对象

import classtest
class Demo:
    count = 0
    def __init__(self,name,age):
        self.name = name
        self.age = age
        Demo.count += 1

    def showcount(self,count):
        print('count=%d' % Demo.count)
        Demo.count = count
        print(Demo.count)

    def showinfo(self):
        print('info=',self.name,'age=',self.age)

class Demochild(Demo):
    def __init__(self):
        print('child构造')

    def showc(self):
        print('child showc')


# info = Demo('xm',20)
# info.age = 100
# info.showcount()
# info.showinfo()

infoc = Demochild()
infoc.showc()
infoc.showcount(200)

if __name__=="__main__":
    print("I'm the ok.")