本地跑得好好的 pymysql.connect("127.0.0.1", ...)，一换成远程 IP 就报 Can't connect to MySQL server，或者卡在 Connection timed out 十几秒才失败——这个场景我猜你正在经历。Python 用 pymysql 连远程数据库，本质上要同时穿过三关：网络能不能到、MySQL 认不认你、字符集和超时 ...

很多人写 Python 操作 MySQL 的 demo，第一步就是把 host、user、password、database 四个参数硬编码进 pymysql.connect()。本地跑没问题，一旦脚本变多、换台机器、或者要把 demo 交给同事复现，密码就开始到处散落：有的写在 .py 里，有的塞进 .env，有的干脆贴在聊天记录里。

"It works on my machine." I'm sure you've said it or heard it at least once—in code reviews, in chat, or during incident post ...

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Independent programmatic re-verification against the real odoo19_dev database (not the synthetic edara_test fixture DB) - a read-mostly validation script was run via odoo-bin shell -d odoo19_dev, ...

Claude connectors are MCP (Model Context Protocol) servers that extend Claude with real-time access to external tools, data sources, and services. They work across Claude.ai, Claude Desktop, Claude ...