python 的反射详解

def bulk(self):
    print('%s is barking'%self.name)
class Dog(object):
    def __init__(self,name):
        self.name = name

    def eat(self,food):
        print('%s is eating %s'%(self.name,food))




d = Dog("zhangye")
choice = input(">>:").strip()

# print(hasattr(d,choice))#hasattr(obj,name_str)判断一个对象obj里是否有对应的name_str字符串的方法映射
# print(getattr(d,choice))#getattr(obj,name_str)根据字符串去获取obj对象里的对应的方法的内存地址，加括号调用
if hasattr(d,choice)== True:
    #删除
    delattr(d,choice)

    #调用
    # f=getattr(d,choice)
    # f("baozi")
    #更改变量值
    # attr = getattr(d, choice)
    # setattr(d,choice,"able_test")#更改变量值

else:
    # setattr(d,choice,bulk)
    # d.talk(d)
    setattr(d,choice,22)#setattr(x, 'y', v) is equivalent to ``x.y = v''
    print(getattr(d,choice))

print(d.name)

,加括号调用