testRotate(new int[] {1, 2, 3}, -3, new int[] {1, 2, 3});
    testRotate(new int[] {1, 2, 3}, -2, new int[] {3, 1, 2});
    testRotate(new int[] {1, 2, 3}, -1, new int[] {2, 3, 1});
    testRotate(new int[] {1, 2, 3}, 0, new int[] {1, 2, 3});
    testRotate(new int[] {1, 2, 3}, 1, new int[] {3, 1, 2});
    testRotate(new int[] {1, 2, 3}, 2, new int[] {2, 3, 1});
    testRotate(new int[] {1, 2, 3}, 3, new int[] {1, 2, 3});

    testRotate(new double[] {1, 2, 3}, -2, new double[] {3, 1, 2});
    testRotate(new double[] {1, 2, 3}, -1, new double[] {2, 3, 1});
    testRotate(new double[] {1, 2, 3}, 0, new double[] {1, 2, 3});
    testRotate(new double[] {1, 2, 3}, 1, new double[] {3, 1, 2});
    testRotate(new double[] {1, 2, 3}, 2, new double[] {2, 3, 1});
    testRotate(new double[] {1, 2, 3}, 3, new double[] {1, 2, 3});

    testRotate(new float[] {1, 2, 3}, -3, new float[] {1, 2, 3});
    testRotate(new float[] {1, 2, 3}, -2, new float[] {3, 1, 2});
    testRotate(new float[] {1, 2, 3}, -1, new float[] {2, 3, 1});
    testRotate(new float[] {1, 2, 3}, 0, new float[] {1, 2, 3});
    testRotate(new float[] {1, 2, 3}, 1, new float[] {3, 1, 2});
    testRotate(new float[] {1, 2, 3}, 2, new float[] {2, 3, 1});
    testRotate(new float[] {1, 2, 3}, 3, new float[] {1, 2, 3});

    testRotate(new long[] {1, 2, 3}, -3, new long[] {1, 2, 3});
    testRotate(new long[] {1, 2, 3}, -2, new long[] {3, 1, 2});
    testRotate(new long[] {1, 2, 3}, -1, new long[] {2, 3, 1});
    testRotate(new long[] {1, 2, 3}, 0, new long[] {1, 2, 3});
    testRotate(new long[] {1, 2, 3}, 1, new long[] {3, 1, 2});
    testRotate(new long[] {1, 2, 3}, 2, new long[] {2, 3, 1});
    testRotate(new long[] {1, 2, 3}, 3, new long[] {1, 2, 3});

//// tab | 🐍 3️⃣.6️⃣ & 🔛

```Python hl_lines="14-22"
{!> ../../docs_src/sql_databases/sql_app/alt_main.py!}
```

////

//// tab | 🐍 3️⃣.9️⃣ & 🔛

```Python hl_lines="12-20"
{!> ../../docs_src/sql_databases/sql_app_py39/alt_main.py!}
```

////

/// info

👥 🚮 🏗 `SessionLocal()` & 🚚 📨 `try` 🍫.

 & ⤴️ 👥 🔐 ⚫️ `finally` 🍫.

# v1.18.0-alpha.4

[Documentation](https://docs.k8s.io)

## Important note about manual tag

Due to a [tagging bug in our Release Engineering tooling](https://github.com/kubernetes/release/issues/1080) during `v1.18.0-alpha.3`, we needed to push a manual tag (`v1.18.0-alpha.4`).

**No binaries have been produced or will be provided for `v1.18.0-alpha.4`.**

pkg text/template/parse, type DotNode bool
pkg text/template/parse, type Node interface { Copy, String, Type }
pkg unicode, const Version = "10.0.0"
pkg unicode, const Version = "11.0.0"
pkg unicode, const Version = "12.0.0"
pkg unicode, const Version = "13.0.0"
pkg unicode, const Version = "6.2.0"
pkg unicode, const Version = "6.3.0"
pkg unicode, const Version = "7.0.0"
pkg unicode, const Version = "8.0.0"

12===e&&(e=0),"\u51cc\u6668"===a||"\u65e9\u4e0a"===a||"\u4e0a\u5348"===a?e:"\u4e2d\u5348"===a?11<=e?e:e+12:"\u4e0b\u5348"===a||"\u665a\u4e0a"===a?e+12:void 0},meridiem:function(e,a,t){var s=100*e+a;return s<600?"\u51cc\u6668":s<900?"\u65e9\u4e0a":s<1200?"\u4e0a\u5348":1200===s?"\u4e2d\u5348":s<1800?"\u4e0b\u5348":"\u665a\u4e0a"},calendar:{sameDay:"[\u4eca\u5929]LT",nextDay:"[\u660e\u5929]LT",nextWeek:"[\u4e0b]ddddLT",lastDay:"[\u6628\u5929]LT",lastWeek:"[\u4e0a]ddddLT",sameElse:"L"},dayOfMonthOrdinalParse:...

“中间件”基本上是一个对每个请求都执行的函数，其中一些代码在端点函数之前执行，另一些代码在端点函数之后执行。

### 创建中间件

我们要添加的中间件（只是一个函数）将为每个请求创建一个新的 SQLAlchemy`SessionLocal`，将其添加到请求中，然后在请求完成后关闭它。

//// tab | Python 3.9+

```Python hl_lines="12-20"
{!> ../../docs_src/sql_databases/sql_app_py39/alt_main.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="14-22"
{!> ../../docs_src/sql_databases/sql_app/alt_main.py!}
```

* Add translation to Spanish for [Concurrency and async / await - Concurrencia y async / await](https://fastapi.tiangolo.com/es/async/). PR [#1290](https://github.com/tiangolo/fastapi/pull/1290) by [@alvaropernas](https://github.com/alvaropernas).
* Remove obsolete vote link. PR [#1289](https://github.com/tiangolo/fastapi/pull/1289) by [@donhui](https://github.com/donhui).