坑一:?: (2_0.W001) Your URL pattern ‘^ has…

因为是新项目,没有历史包袱,所以直接上了 Django 2.0 的方案,于是照着老司机经验教程爬就掉到了这个坑,全提示是:

WARNINGS:
?: (2_0.W001) Your URL pattern '^$' has a route that contains '(?P<', begins with a '^', or ends with a '$'. This was likely an oversight when migrating to django.urls.path().

解决很简单,Google 大法

https://stackoverflow.com/a/47661654

抄一下原答案:



The new path() syntax in Django 2.0 does not use regular expressions. You want something like:

path('<int:album_id>/', views.detail, name='detail'),

If you want to use a regular expression, you can use re_path().

re_path(r'^(?P<album_id>[0-9])/$', views.detail, name='detail'),

The old url() still works and is now an alias to re_path, but it is likely to be deprecated in future.

url(r'^(?P<album_id>[0-9])/$', views.detail, name='detail'),

意思是新的 path() 方法不认正则表达式,如果在 urls 中想用正则,需要用 re_path(),旧的 url() 方法在 Django 2.0 中依然支持,等同于 re_path(),未来可能会 deprecated,所以就用 re_path() 吧