Bu, tüm API'nızı oluşturmak için ana etkileşim noktası olacaktır.

### Adım 3: bir *path operation* oluşturun { #step-3-create-a-path-operation }

#### Path { #path }

Buradaki "Path", URL'in ilk `/` işaretinden başlayarak son kısmını ifade eder.

Yani, şu şekilde bir URL'de:

```
https://example.com/items/foo
```

...path şöyle olur:

```
/items/foo
```

/// info | Bilgi

흔히 사용되지 않는 것들도 있습니다:

* `@app.options()`
* `@app.head()`
* `@app.patch()`
* `@app.trace()`

/// tip | 팁

각 작동(HTTP 메소드)을 원하는 대로 사용해도 됩니다.

**FastAPI**는 특정 의미를 강제하지 않습니다.

여기서 정보는 지침서일뿐 강제사항이 아닙니다.

예를 들어 GraphQL을 사용하는 경우, 일반적으로 `POST` 작동만 사용하여 모든 행동을 수행합니다.

///

### 4 단계: **경로 처리 함수** 정의 { #step-4-define-the-path-operation-function }

다음은 우리의 "**경로 처리 함수**"입니다:

  /**
   * Split a freeform string into a host and port, without strict validation.
   *
   * <p>Note that the host-only formats will leave the port field undefined. You can use {@link
   * #withDefaultPort(int)} to patch in a default value.
   *
   * @param hostPortString the input string to parse.
   * @return if parsing was successful, a populated HostAndPort object.

    public static final String MAVEN_VERSION_MINOR = "maven.version.minor";

    /**
     * Maven patch version: contains the patch segment of this Maven version.
     *
     * @since 4.0.0
     */
    @Config(readOnly = true, source = Config.Source.SYSTEM_PROPERTIES)
    public static final String MAVEN_VERSION_PATCH = "maven.version.patch";

    /**
     * Maven snapshot: contains "true" if this Maven is a snapshot version.
     *

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

#### Path { #path }

"Path" here refers to the last part of the URL starting from the first `/`.

So, in a URL like:

```
https://example.com/items/foo
```

...the path would be:

```
/items/foo
```

/// info

A "path" is also commonly called an "endpoint" or a "route".

Dies wird der Hauptinteraktionspunkt für die Erstellung all Ihrer APIs sein.

### Schritt 3: Erstellen einer *Pfadoperation* { #step-3-create-a-path-operation }

#### Pfad { #path }

„Pfad“ bezieht sich hier auf den letzten Teil der URL, beginnend mit dem ersten `/`.

In einer URL wie:

```
https://example.com/items/foo
```

... wäre der Pfad folglich:

    * Add `kubectl apply edit-last-applied` subcommand ([#42256](https://github.com/kubernetes/kubernetes/pull/42256), [@shiywang](https://github.com/shiywang))

  * Strategic Merge Patch

    * Reference docs now display the patch type and patch merge key used by `kubectl apply` to merge and identify unique elements in arrays.

Здесь переменная `app` будет экземпляром класса `FastAPI`.

Это будет основная точка взаимодействия для создания всего вашего API.

### Шаг 3: создайте *операцию пути (path operation)* { #step-3-create-a-path-operation }

#### Путь (path) { #path }

Здесь «путь» — это последняя часть URL, начиная с первого символа `/`.

Итак, в таком URL:

```
https://example.com/items/foo
```

...путь будет:

以及更少見的：

* `@app.options()`
* `@app.head()`
* `@app.patch()`
* `@app.trace()`

/// tip

你可以自由地使用每個操作（HTTP 方法）。

**FastAPI** 不強制任何特定的意義。

這裡的資訊作為一個指南，而不是要求。

例如，當使用 GraphQL 時，你通常只使用 `POST` 操作。

///

### 第四步：定義「路徑操作函式」 { #step-4-define-the-path-operation-function }

這是我們的「**路徑操作函式**」：

* **path**：是 `/`。
* **operation**：是 `get`。

### Paso 3: crea una *path operation* { #step-3-create-a-path-operation }

#### Path { #path }

"Path" aquí se refiere a la última parte de la URL empezando desde la primera `/`.

Así que, en una URL como:

```
https://example.com/items/foo
```

...el path sería:

```
/items/foo
```

/// info | Información

Un "path" también es comúnmente llamado "endpoint" o "ruta".