我正在创建Django应用,并且遇到路由未识别的问题.这是我尝试创建的同一DJango民意测验应用程序,但文档代码不起作用.这是我的代码如下：

djangoproject / urls.py

from django.conf.urls import url, include
from django.contrib import admin

urlpatterns = [
    url(r'^simpleapp/', include('simpleapp.urls')),
    url(r'^admin/', admin.site.urls),
]

simpleapp / views.py

from django.shortcuts import render
from django.http import HttpResponse, request


def index(request):
    return HttpResponse("Hello, world. You're at the polls index.")

def detail(request, question_id):
    return HttpResponse("You're looking at question %s." % question_id)

def results(request, question_id):
    response = "You're looking at the results of question %s."
    return HttpResponse(response % question_id)

def vote(request, question_id):
    return HttpResponse("You're voting on question %s." % question_id)

simpleapp / urls.py

from django.conf.urls import url
from . import views

urlpatterns = [
    # ex: /simpleapp/
    # url('', views.index, name='index'),
    # ex: /simpleapp/5/
    url('<int:question_id>/', views.detail, name='detail'),
    # ex: /simpleapp/5/results/
    url('<int:question_id>/results/', views.results, name='results'),
    # ex: /simpleapp/5/vote/
    url('<int:question_id>/vote/', views.vote, name='vote'),
]

如果我取消注释simpleapp / urls.py代码的”路径的第一个URL,则显示的所有页面均为”路径.但是,如果我将url”路径保留为注释,则路由会给我以下错误：

Page not found (404)
Request Method: GET
Request URL:    http://127.0.0.1:8000/simpleapp/34/
Using the URLconf defined in simple_django.urls, Django tried these URL patterns, in this order:

^simpleapp/ <int:question_id>/ [name='detail']
^simpleapp/ <int:question_id>/results/ [name='results']
^simpleapp/ <int:question_id>/vote/ [name='vote']
^admin/
The current path, simpleapp/34/, didn't match any of these.

You're seeing this error because you have DEBUG = True in your Django settings file. Change that to False, and Django will display a standard 404 page.

我无法使用django.conf.urls或django.urls导入path(). url()成功.我正在使用python版本3.6.7和Django版本2.1.5.我想念什么？

解决方法:

您在simpleapp / urls.py中使用的是路径语法,而不是正则表达式.更改为：

urlpatterns = [
  path('<int:question_id>/', views.detail, name='detail'),
  path('<int:question_id>/results/', views.results, name='results'),
  path('<int:question_id>/vote/', views.vote, name='vote'),
]

您的项目URL使用的是正则表达式,因此尽管您可能希望使它们保持一致,但不应更改它们.