This means that, even though your API clients can only send strings as keys, as long as those strings contain pure integers, Pydantic will convert them and validate them.

And the `dict` you receive as `weights` will actually have `int` keys and `float` values.

///

## Recap

With **FastAPI** you have the maximum flexibility provided by Pydantic models, while keeping your code simple, short and elegant.

    assertThat(Adapters.INTEGER_AS_LONG.toDer(-549755813887L)).isEqualTo(bytes)
  }

  @Test fun `eight zeros`() {
    val bytes = "020200ff".decodeHex()
    assertThat(Adapters.INTEGER_AS_LONG.fromDer(bytes)).isEqualTo(255)
    assertThat(Adapters.INTEGER_AS_LONG.toDer(255)).isEqualTo(bytes)
  }

  @Test fun `eight ones`() {
    val bytes = "0201ff".decodeHex()

nt("tr"),n=C.createElement("div"),e.style.cssText="position:absolute;left:-11111px;border-collapse:separate",t.style.cssText="box-sizing:content-box;border:1px solid",t.style.height="1px",n.style.height="9px",n.style.display="block",J.appendChild(e).appendChild(t).appendChild(n),r=ie.getComputedStyle(t),a=parseInt(r.height,10)+parseInt(r.borderTopWidth,10)+parseInt(r.borderBottomWidth,10)===t.offsetHeight,J.removeChild(e)),a}}))}();var Qe=["Webkit","Moz","ms"],Je=C.createElement("div").style,Ke={};function...

  /**
   * The HTTP <a
   * href="https://wicg.github.io/responsive-image-client-hints/#sec-ch-viewport-height">{@code
   * Sec-CH-Viewport-Height}</a> header field name.
   *
   * @since 32.0.0
   */
  public static final String SEC_CH_VIEWPORT_HEIGHT = "Sec-CH-Viewport-Height";
  /**
   * The HTTP <a href="https://wicg.github.io/responsive-image-client-hints/#sec-ch-dpr">{@code

                (byte) 0x05, (byte) 0x06, (byte) 0x07, (byte) 0x08
              },
              0x89abcdef,
              0x0123456789abcdefL, // asInt/asLong as above, due to equal eight first bytes
              "efcdab89674523010102030405060708"),
          new ExpectedHashCode(
              new byte[] {(byte) 0xdf, (byte) 0x9b, (byte) 0x57, (byte) 0x13},
              0x13579bdf,
              null,

        verifyArcfourHMAC(17, expect, data, key);
    }



    @Test
    public void testAES128Checksum () throws GeneralSecurityException {
        String data = "eight nine ten eleven twelve thirteen";
        String key = "9062430C8CDA3388922E6D6A509F5B7A";
        String expect = "01A4B088D45628F6946614E3";
        verifyAESHMAC(3, expect, key, data.getBytes(StandardCharsets.US_ASCII));

n=e.style.marginRight,i=g(e).css("margin-right");g(e).data("margin-right",n).css("margin-right",parseFloat(i)-o._scrollbarWidth+"px")});var n=document.body.style.paddingRight,i=g(document.body).css("padding-right");g(document.body).data("padding-right",n).css("padding-right",parseFloat(i)+this._scrollbarWidth+"px")}g(document.body).addClass(fe)},t._resetScrollbar=function(){var t=[].slice.call(document.querySelectorAll(Ee));g(t).each(function(t,e){var n=g(e).data("padding-right");g(e).removeData("padding-ri...

  private static final int CRC32C_GENERATOR = 0x1EDC6F41; // 0x11EDC6F41
  private static final int CRC32C_GENERATOR_FLIPPED = Integer.reverse(CRC32C_GENERATOR);

  public void testCrc32cByteTable() {
    // See Hacker's Delight 2nd Edition, Figure 14-7.
    int[] expected = new int[256];
    for (int i = 0; i < expected.length; i++) {
      int crc = i;
      for (int j = 7; j >= 0; j--) {
        int mask = -(crc & 1);

```

////

/// tip

请记住 JSON 仅支持将 `str` 作为键。

但是 Pydantic 具有自动转换数据的功能。

这意味着，即使你的 API 客户端只能将字符串作为键发送，只要这些字符串内容仅包含整数，Pydantic 就会对其进行转换并校验。

然后你接收的名为 `weights` 的 `dict` 实际上将具有 `int` 类型的键和 `float` 类型的值。

///

## 总结

使用 **FastAPI** 你可以拥有 Pydantic 模型提供的极高灵活性，同时保持代码的简单、简短和优雅。

而且还具有下列好处：

* 编辑器支持（处处皆可自动补全！）
* 数据转换（也被称为解析/序列化）
* 数据校验
* 模式文档

    )

    taskFaker.assertNoMoreTasks()
  }

  /**
   * This test puts several connections in flight that all fail at approximately the same time. It
   * confirms the fast fallback implements these invariants:
   *
   *  * if there's no TCP connect in flight, start one.
   *  * don't start a new TCP connect within 250 ms of the previous TCP connect.
   */
  @Test