关于python:mixin对于django通用视图，对象如何具有超类？

Mixin for Django generic views, how can object have a superclass?

所以背景细节，post是一个模型，我基本上是想创建一个博客，和视频中显示的一样。

代码如下：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

from django.views.generic import ListView, DetailView

from models import Post

class PublishedPostsMixin(object):
def get_queryset(self):
queryset = super(PublishedPostsMixin, self).get_queryset()
return queryset.filter(published=True)

class PostListView(PublishedPostsMixin, ListView):
# PostListView takes default template name as `post_list.html`,
# as list was the name it was assigned.
model = Post
template_name = 'blog/post_list.html'

class PostDetailView(PublishedPostsMixin, DetailView):
model = Post
template_name = 'blog/post_detail.html'

所以，如果你能看到，PublishedPostsMixin是从对象继承的，那么super()是如何工作的。如果你能理解正在发生的事情，请你一步一步地解释，我有点困惑。