python类属性继承 [英] python class attribute inheritance

问题描述

我正在尝试通过编写以下代码来节省输入时间，但似乎无法做到这一点：

I am trying to save myself a bit of typing by writing the following code, but it seems I can't do this:

class lgrAdminObject(admin.ModelAdmin):
    fields = ["title","owner"]
    list_display = ["title","origin","approved", "sendToFrames"]

class Photos(lgrAdminObject):
    fields.extend(["albums"])

为什么不起作用？而且由于它们不起作用，所以我不能做超级把戏

why doesn't that work? Also since they're not functions, I can't do the super trick

fields = super(Photos, self).fields
fields.extend(["albums"])

推荐答案

继承在类的主体执行后 应用。在类主体中，您可以使用 lgrAdminObject.fields -您确定要更改超类的属性，而不是先复制它吗？似乎很奇怪...我将从副本开始：

Inheritance applies after the class's body executes. In the class body, you can use lgrAdminObject.fields -- you sure you want to alter the superclass's attribute rather than making a copy of it first, though? Seems peculiar... I'd start with a copy:

class Photos(lgrAdminObject):
    fields = list(lgrAdminObject.fields)

，然后继续进行更改。

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