打开一个终端

输入新建app命令

python manage.py startapp antapp

在app下的views.py内写一个视图

from django.http import HttpResponse

# Create your views here.
def hello(request):
    return HttpResponse("this is hello/")

app路由引入该视图

from django.contrib import admin
from django.urls import path
from antapp import views

urlpatterns = [
    path("hello/", views.hello),
]

项目路由引入app路由

from django.contrib import admin
from django.urls import path,include

urlpatterns = [
    path("admin/", admin.site.urls),
    path("", include("antapp.urls")),
]

项目(settings.py)引入app（AntappConfig配置类）

 "antapp.apps.AntappConfig",

运行项目