4. 方式二：sqlalchemy 引擎、连接池与 to_sql 实战 sqlalchemy 的核心是 create_engine。 它返回的不是连接，而是"连接工厂 + 连接池"，你每次用的时候它从池里借一个，用完还回去。 这对高并发服务是刚需。

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本内容遵循CC 4.0 BY-SA版权协议 在Python Web开发领域，Flask和SQLAlchemy这对组合堪称经典。作为轻量级Web框架，Flask提供了足够的灵活性，而SQLAlchemy作为Python最强大的ORM工具之一，为数据库操作带来 ...