2

class Dog(object):
    def __init__(self,name):
        self.name = name
        print('这是dog的init')
    def introduce(self):
        print('介绍狗')

#创建对象
dog1 = Dog(‘小白’)
#动态增加实例属性
dog1.leg = 4
print(‘这只狗的名字’,dog1.name)
print(‘这只狗的腿’,dog1.leg)

print(’#############’)
dog1.introduce()