那么，这关于先有鸡还是先有蛋的问题，如何调用第一个 `async` 函数？

如果你使用 **FastAPI**，你不必担心这一点，因为"第一个"函数将是你的路径操作函数，FastAPI 将知道如何做正确的事情。

但如果你想在没有 FastAPI 的情况下使用 `async` / `await`，则可以这样做。

### 编写自己的异步代码 { #write-your-own-async-code }

Starlette （和 **FastAPI**） 是基于 [AnyIO](https://anyio.readthedocs.io/en/stable/) 实现的，这使得它们可以兼容 Python 的标准库 [asyncio](https://docs.python.org/3/library/asyncio-task.html) 和 [Trio](https://trio.readthedocs.io/en/stable/)。

The effect of these operations on the synchronized-before partial order
is documented in the “Synchronization” section below.
Individual packages are responsible for providing similar documentation
for their own operations.
</p>

<h2 id="restrictions">Implementation Restrictions for Programs Containing Data Races</h2>

<p>
The preceding section gave a formal definition of data-race-free program execution.

 *  New: Switch our Internationalized Domain Name (IDN) implementation to [UTS #46 Nontransitional
    Processing][uts46]. With this fix, the `ß` code point no longer maps to `ss`. OkHttp now embeds
    its own IDN mapping table in the library.

 *  New: Prefer the client's configured precedence order for TLS cipher suites. (OkHttp used to
    prefer the JDK’s precedence order.) This change may cause your HTTP calls to negotiate a

     * longer be the case.)
     *
     * javax.naming.Name and java.util.concurrent.Delayed might work, but
     * they're fairly obscure, we've invented our own interface and class.
     */
    Interface a = new Impl();
    Interface b = new Impl();
    ImmutableSortedSet<Interface> set = ImmutableSortedSet.of(a, b);
    Object[] unused1 = set.toArray();

#### New API fields:

Wenn Sie jedoch `async` / `await` ohne FastAPI verwenden möchten, können Sie dies auch tun.

### Schreiben Sie Ihren eigenen asynchronen Code { #write-your-own-async-code }

- Fix: set "host is down" as corrupted mount ([#101398](https://github.com/kubernetes/kubernetes/pull/101398), [@andyzhangx](https://github.com/andyzhangx)) [SIG Cloud Provider and Storage]

- Locked down the `AllowOverwriteTerminationGracePeriodSeconds` feature gate. ([#133792](https://github.com/kubernetes/kubernetes/pull/133792), [@HirazawaUi](https://github.com/HirazawaUi))

common:rbe_linux_cpu --copt=-Wno-gnu-offsetof-extensions
# Python config is the same across all containers because the binary is the same
common:rbe_linux_cpu --python_path="/usr/bin/python3"
# These you may need to change for your own GCP project.
common:rbe_linux_cpu --remote_instance_name=projects/tensorflow-testing/instances/default_instance

# Deprecated RBE config with non-hermetic toolchains.
common:rbe_linux_cpu_clang_local --config=rbe_linux_cpu

            deleteDirectory(tempDir);
        }
    }

    @BeforeEach
    void setupTest() throws Exception {
        // No specific setup needed - tests will create their own files
        log.debug("Test setup completed");
    }

    @AfterEach
    void cleanupTest() throws Exception {
        // Simple cleanup between tests
        try {
            System.gc();