URL反解析：reverse

reverse():反转URLreverse(viewname[, urlconf=None, args=None, kwargs=None, current_app=None])[source]例如，给定以下url:项目的urls：urlpatterns = [    url(r'^admin/', include(admin.site.urls)),    url(r'^employ/',include('employ.urls',namespace='employ')),]应用employ的url：from django.conf.urls import urlfrom employ import viewsurlpatterns = [    url(r'^$', views.show_departs,name='index'),    url(r'^(\d+)/$',views.show_employees,name='detail'),    url(r'^(\d+)/(\d+)/$',views.show_leader,name='leader'),    url(r'^login/$',views.login,name='login'),    url(r'^login/(?P<id>[\w]+)/$', views.show_employees, name='login2'),]from django.core.urlresolvers import reverse#无参In [43]: reverse('employ:index')Out[43]: '/employ/'In [46]: reverse('employ:login')Out[46]: '/employ/login/'#如果网址接受参数，可以在args中传递参数，位置参数In [44]: reverse('employ:detail',args=(1,))Out[44]: '/employ/1/'In [45]: reverse('employ:leader',args=(1,2))Out[45]: '/employ/1/2/'#kwargs，使用dict传参，关键字参数In [6]: reverse('employ:login2',kwargs={'id':'12qqq_3'})Out[6]: '/employ/login/12qqq_3/'args和kwargs不能同时传递到reverse()。如果不能匹配，reverse()会引发NoReverseMatch异常。不能匹配包含使用竖线（"|"）,("*")的正则表达式