创建应用：python manage.py startapp app
启动项目：python manage.py runserver 8000
生成迁移：python manage.py makemigrations
执行迁移：python manage.py migrate
清空数据库：python manage.py flush
创建超级管理员：python manage.py createsuperuser
修改用户密码：python manage.py changepassword username
查看django版本：django-admin --version