I\'m thinking a bit about the concept of Django aggregates. I don\'t quite \"get\" how they can be used in my case. Basically i have a three-tier hierarchy of objects in my model, and the lowest objec
目录前言local()函数是什么？local()函数如何用？1.不做标记，不做隔离2.使用local()函数加以控制3.模拟实现local()的功能，创建一个箱子4.简化代码操作，进一步模拟实...
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