如何在python中动态创建对象？ [英] How to create objects on the fly in python?

问题描述

如何在Python中动态创建对象？我经常想将信息传递给Django模板，其格式如下：

How do I create objects on the fly in Python? I often want to pass information to my Django templates which is formatted like this:

{'test': [a1, a2, b2], 'test2': 'something else', 'test3': 1}

模板看起来不整洁。所以我认为最好创建一个像这样的对象：

which makes the template look untidy. so I think it's better to just create an object which is like:

class testclass():
    self.test = [a1,a2,b2]
    self.test2 = 'someting else'
    self.test3 = 1
testobj = testclass()

所以我可以这样做：

{{ testobj.test }}
{{ testobj.test2 }}
{{ testobj.test3 }}

而不是调用字典。

由于我只需要该对象一次，是否可以在不首先编写类的情况下创建它？有速记代码吗？可以那样做还是不好用？

Since I just need that object once, is it possible to create it without writing a class first? Is there any short-hand code? Is it ok to do it like that or is it bad Python?

推荐答案

您可以使用内置的类型函数：

testobj = type('testclass', (object,), 
                 {'test':[a1,a2,b2], 'test2':'something else', 'test3':1})()

但是在这种特定情况下（Django模板的数据对象），您应该使用@Xion的解决方案。

But in this specific case (data object for Django templates), you should use @Xion's solution.

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