reverse反解url

- URL:
from django.urls import reverse

url(r'^all/(?<article_type_id>\d+).html$', home.index, name='index'),
在HTML中：{% url "index" article_type_id=1 %} => all/1.html
在views中：reverse('index',kwargs={"article_type_id":1}) =>all/1.html

url(r'^all/(\d+).html$', home.index, name='index'),
在HTML中：{% url "index" 1 %} =>all/1.html
在views中：reverse('index',args=(1,)) =>all/1.html

- 利用reverse+分页组件完成：分类查看+分页