看到几个字典生成式,记录下来吧!
callmap = {'GET': 'read', 'POST': 'create', 'PUT': 'update', 'DELETE': 'delete'} # def __new__(metaclass, name, bases, namespace): class Test(object): def read(self): print('get') return 'get' def create(self): print('post') return 'post' def update(self): print('put') return 'put' cls = Test # 遍历callmap字典,寻找cls类中method方法,如果有则返回键和值;如果没有,忽略 crud = { (http_method,None): getattr(cls, method) for http_method, method in list(callmap.items()) if getattr(cls, method, None) is not None } print(crud)
结果:
{'GET': <function Test.read at 0x010C0858>, 'PUT': <function Test.update at 0x010C08E8>, 'POST': <function Test.create at 0x010C08A0>}
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。