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Google App Engine SDK for Python based (appcfg.py), ini file configured, batch-deploying tool to upload/upgrade/rollback GAE server, including Goagent, server code with/without a VPN. 基于Google App Engine SDK for Python (appcfg.py)，ini文件配置，批量部署工具来上传/更新/回退 GAE 服务端，可借助也可不借助VPN。