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      communication on electronic mailing lists, source code control systems,
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      communication on electronic mailing lists, source code control systems,
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      communication on electronic mailing lists, source code control systems,
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{* ../../docs_src/dependencies/tutorial014_an_py310.py ln[24:28] hl[28] *}

这样会话会释放数据库连接，让其他请求可以使用。

如果你还有其他需要在 `yield` 依赖项中提前退出的用例，请创建一个 [GitHub 讨论问题](https://github.com/fastapi/fastapi/discussions/new?category=questions)，说明你的具体用例以及为何提前关闭会对你有帮助。

如果确有有力的用例需要提前关闭，我会考虑新增一种选择性启用提前关闭的方式。

### 带 `yield` 的依赖项与 `except`（技术细节） { #dependencies-with-yield-and-except-technical-details }

      communication on electronic mailing lists, source code control systems,
      and issue tracking systems that are managed by, or on behalf of, the
      Licensor for the purpose of discussing and improving the Work, but
      excluding communication that is conspicuously marked or otherwise
      designated in writing by the copyright owner as "Not a Contribution."

representatives, including but not limited to communication on electronic 
mailing lists, source code control systems, and issue tracking systems that 
are managed by, or on behalf of, the Licensor for the purpose of discussing 
and improving the Work, but excluding communication that is conspicuously 
marked or otherwise designated in writing by the copyright owner as "Not a 
Contribution."