原文链接:https://www.cnblogs.com/sss4/p/8097653.html
文档: http://docs.jinkan.org/docs/flask/quickstart.html
银角大王:http://www.cnblogs.com/wupeiqi/articles/7552008.html
银角大王:http://www.cnblogs.com/wupeiqi/articles/5713330.html(执行原生SQL模块 pymsql ,ORM框架 SQLAchemy)