我的views.py

from django.http import HttpResponse, Http404
from django.shortcuts import render, get_object_or_404

from .models import Question

def index(request):
    latest_question_list = Question.objects.order_by('-pub_date')[:5]
    context = {'latest_question_list': latest_question_list}
    return render(request, 'polls/index.html', context)

def detail(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    return render(request, 'polls/detail.html', {'question': question})

我的urls.py

from django.urls import path

from . import views

app_name = 'polls'
urlpatterns = [
    path('/', views.index, name='index'),
    path('<int:question_id>/', views.detail, name='detail'),
]

当我去'http：//127.0.0.1：8000/polls/1/'我收到'页面找不到'错误，但我肯定有这个问题_id，我可以看到这个问题_id在 shell ，它不重要什么ID我写我总是收到同样的问题。
Image from my web browser