在URL.py文件中写入代码：from django.urls import pathfrom . import viewsurlpatterns = [ path(r'^index/$', views.index), path(r'^article/(?P[0-9]+)/$', views.article_page),]网页请求出错404：Using the URLconf defined in myblog.urls, Django tried these URL patterns, in this order:admin/blog/ ^index/$blog/ ^article/(?P[0-9]+)/$The current path, blog/index/, didn't match any of these.应该是正则表达式没有起作用，显示匹配不到url，请问怎么解决？
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