Tornado+Layui+SQLAlchemy(十二)Tornado+SQLAlchemy 连接文件抛异常 MySQL Connection not available.
目的:连接异常代码:[E20051615:06:40iostream:565]Uncaughtexception,closingconnection.Traceback(mostrecentcalllast):File"C:\Python\Python35-32\lib\site-packages\sqlalchemy\engine\base.py",line1173,in_execute_con