1.开始debug模式
在shell环境（vscode）下
$env:FLASK_APP = "demo.py"
$env:FLASK_ENV = "development"
flask run
cmd命令行下
set FLASK_APP = demo.py
set FLASK_ENV = development
flask run
2.url_for()
https://www.cnblogs.com/zhongyehai/p/11768741.html
3.flask部署(gunicorn+nginx）
https://blog.csdn.net/qq_35304570/article/details/80304482
4.flask需求文件
https://blog.csdn.net/weixin_44141899/article/details/86482932
pip freeze > requirements.txt #生成requirement.txt 文件
pip install -r requirements.txt #安装requirement.txt 依赖
