当我运行我的脚本时，我得到了这个输出:/app/venv/lib/python2.7/site-packages/flask/exthook.py:71:ExtDeprecationWarning:Importingflask.ext.sqlalchemyisdeprecated,useflask_sqlalchemyinstead..format(x=modname),ExtDeprecationWarning/app/venv/lib/python2.7/site-packages/flask/exthook.py:71:ExtDeprecationWarning:Importin