提出了一个错误,装饰器的执行顺序应该是“自上而下”,而不是”自下而上“,同时上传了一张照片用于辅助详细说明,修改照片名称以保证命名格式与其他的照片一致。 #1155
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装饰器的执行顺序是 “自上而下”,不是 “自下而上” —— 比如在上述例子中,执行'an_output()'时依次发生下述步骤:
虽然反映出来的效果是 “自下而上” 或者 “由里到外” ,但其实是 ”自上而下“。
我做出以上判断的依据有二: