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

def index(request):
    html = "html>body>It is index page/body>/html>"
    return HttpResponse(html)

def orderlist(request):
    html = "html>body>It is order list/body>/html>"
    return HttpResponse(html)

def produtlist(request):
    html = "html>body>It is produt list/body>/html>"
    return HttpResponse(html)

from django.contrib import admin
from django.urls import path
from django.urls import re_path
from .views import *                 “ 导入视图模块

urlpatterns = [
    path('admin/', admin.site.urls),
    path('index/', index),           “ index路由
    path('order/', orderlist),           “ orderlist路由
    path('produt/', produtlist),       “ produtlist路由
]

def order(request, id):
    html = "html>body>It is order detail id =" + id + "  /body>/html>"
    return HttpResponse(html)

urlpatterns = [
    re_path('order/([0-9]+)/', order ),          “ ([0-9]+) 表示订单号是数字
]