Django import模块：

AbstractUser：from django.contrib.auth.models import AbstractUser

admin：from django.contrib import admin

AppConfig：from django.apps import AppConfig

from django.contrib.auth import authenticate

forms：from django import forms

get_object_or_404：from django.shortcuts import get_object_or_404

get_filter_or_404：from django.shortcuts import get_filter_or_404

HttpResponse：from django.http import HttpResponse

HttpResponseRedirect：from django.http import HttpResponseRedirect

Http404：from django.http import Http404

include：from django.conf.urls import include

login：from django.contrib.auth import login

login_required：from django.contrib.auth.decorators import login_required

logout：from django.contrib.auth import logout

make_password：from django.contrib.auth.hashers import make_password

method_decorator：from django.utils.decorators import method_decorator

models：from django.db import models

Q：from django.db.models import Q

render：from django.shortcuts import render

render_to_response：from django.shortcuts import render_to_response

reverse：from django.urls import reverse

re_path：from django.urls import re_path

path：from django.urls import path

serve：from django.views.static import serve

url：from django.conf.urls import url

View：from django.views.generic.base import View