类属性
1.类属性
类属性又称为静态变量,或者是静态数据。这些数据是与它们所属的类对象绑定的,不依赖于任何类实例。
2.增 删 改 查
class zoo: country = 'china' def __init__(self,name,address,kind): self.name = name self.address = address self.kind = kind def monkey(self): print('this is monkey (%s)' %self.address) def tiger(self): print('this is tiger (%s)' %self.kind) def end(self): print('welcome to %s' %self.name) dwy = zoo('chinese\'s zoo','beijing','others') zoo.monkey(dwy) zoo.tiger(dwy) zoo.end(dwy) # 对类的属性增 删 改 查 print(zoo.country) # 查看信息 zoo.country = 'US' # 修改信息 print(zoo.country) zoo.snake = 'this is snake' # 增加 print(dwy.snake) del zoo.country # 删除 del zoo.snake print(zoo.__dict__)
运行结果:
this is monkey (beijing) this is tiger (others) welcome to chinese's zoo china US this is snake {'__module__': '__main__', '__init__': <function zoo.__init__ at 0x7fb30efb8d90>, 'monkey': <function zoo.monkey at 0x7fb30efb8f28>, 'tiger': <function zoo.tiger at 0x7fb30efc9048>, 'end': <function zoo.end at 0x7fb30efc9378>, '__dict__': <attribute '__dict__' of 'zoo' objects>, '__weakref__': <attribute '__weakref__' of 'zoo' objects>, '__doc__': None} Process finished with exit code 0