### Crie uma classe `Enum` { #create-an-enum-class }

Importe `Enum` e crie uma subclasse que herde de `str` e de `Enum`.

Ao herdar de `str`, a documentação da API saberá que os valores devem ser do tipo `string` e poderá renderizá-los corretamente.

## Створити TypeScript SDK { #create-a-typescript-sdk }

Почнімо з простого застосунку FastAPI:

{* ../../docs_src/generate_clients/tutorial001_py310.py hl[7:9,12:13,16:17,21] *}

由于路径首先匹配，始终会使用第一个定义的。

## 预设值 { #predefined-values }

路径操作使用 Python 的 <abbr title="Enumeration - 枚举">`Enum`</abbr> 类型接收预设的路径参数。

### 创建 `Enum` 类 { #create-an-enum-class }

导入 `Enum` 并创建继承自 `str` 和 `Enum` 的子类。

通过从 `str` 继承，API 文档就能把值的类型定义为**字符串**，并且能正确渲染。

然后，创建包含固定值的类属性，这些固定值是可用的有效值：

{* ../../docs_src/path_params/tutorial005_py310.py hl[1,6:9] *}

	logCh := h.logCh
	if logCh != nil {
		// We are not allowed to add when logCh is nil
		h.wg.Add(1)
		defer h.wg.Done()
	}
	h.logChMu.RUnlock()

	if logCh == nil {
		return
	}

	// Create a routine which sends json logs received
	// from an internal channel.
	for entry := range logCh {
		h.logEntry(entry)
	}
}

func (h *Target) logEntry(entry any) {
	atomic.AddInt64(&h.totalMessages, 1)

   * @throws IllegalArgumentException if {@code rowKeys} or {@code columnKeys} contains duplicates
   *     or if exactly one of {@code rowKeys} or {@code columnKeys} is empty.
   */
  public static <R, C, V> ArrayTable<R, C, V> create(
      Iterable<? extends R> rowKeys, Iterable<? extends C> columnKeys) {
    return new ArrayTable<>(rowKeys, columnKeys);
  }

  /*
   * TODO(jlevy): Add factory methods taking an Enum class, instead of an

`FastAPI`でも[Starlette](https://www.starlette.dev/)のすべての機能を利用可能です。

///

### Step 2: `FastAPI`の「インスタンス」を生成 { #step-2-create-a-fastapi-instance }

{* ../../docs_src/first_steps/tutorial001_py310.py hl[3] *}
ここで、`app`変数が`FastAPI`クラスの「インスタンス」になります。

これが、すべてのAPIを作成するための主要なポイントになります。

### Step 3: *path operation*を作成 { #step-3-create-a-path-operation }

#### パス { #path }

ここでの「パス」とは、最初の`/`から始まるURLの最後の部分を指します。

したがって、次のようなURLでは:

final executable. External linking avoids the dynamic library
requirement but introduces a requirement that the host linker be
present to create such a binary.

Most builds both compile source code and invoke the linker to create a
binary. When cgo is involved, the compile step already requires gcc, so
it is not problematic for the link step to require gcc too.

    subsequent version of the License published by the license steward.

    4.3. Modified Versions.

    When You are an Initial Developer and You want to create a new
    license for Your Original Software, You may create and use a
    modified version of this License if You: (a) rename the license and
    remove any references to the name of the license steward (except to

    input.addListener(output, rejectionPropagatingExecutor(executor, output));
    return output;
  }

  static <I extends @Nullable Object, O extends @Nullable Object> ListenableFuture<O> create(
      ListenableFuture<I> input, Function<? super I, ? extends O> function, Executor executor) {
    TransformFuture<I, O> output = new TransformFuture<>(input, function);

        // Check for SLF4J first (most commonly used)
        if (isClassAvailable("org.slf4j.LoggerFactory")) {
            try {
                // Dynamically create SLF4J adapter if available
                return new JulLoggerAdapterFactory(); // For now, fallback to JUL
                // In future: return new Slf4jLoggerAdapterFactory();
            } catch (final Throwable ignore) {