### Проверьте { #check-it }

Откройте браузер по адресу: <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>.

Вы увидите JSON-ответ вида:

```JSON
{"message": "Hello World"}
```

### Интерактивная документация API { #interactive-api-docs }

Теперь перейдите по адресу: <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

For example, if you have a function:

```Python
@lru_cache
def say_hi(name: str, salutation: str = "Ms."):
    return f"Hello {salutation} {name}"
```

your program could execute like this:

```mermaid
sequenceDiagram

participant code as Code
participant function as say_hi()
participant execute as Execute function

```

该行显示了你的应用在本机所提供服务的 URL 地址。

### 查看

打开浏览器访问 <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>。

你将看到如下的 JSON 响应：

```JSON
{"message": "Hello World"}
```

### 交互式 API 文档

跳转到 <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>。

### Check it { #check-it }

Open your browser at <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>.

You will see the JSON response as:

```JSON
{"message": "Hello World"}
```

### Interactive API docs { #interactive-api-docs }

Now go to <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

////

## bloques de código { #code-blocks }

//// tab | Prueba

Un ejemplo de código Bash...

```bash
# Imprime un saludo al universo
echo "Hello universe"
```

...y un ejemplo de código de consola...

```console
$ <font color="#4E9A06">fastapi</font> run <u style="text-decoration-style:solid">main.py</u>

Por ejemplo, si tienes una función:

```Python
@lru_cache
def say_hi(name: str, salutation: str = "Ms."):
    return f"Hello {salutation} {name}"
```

tu programa podría ejecutarse así:

```mermaid
sequenceDiagram

participant code as Código
participant function as say_hi()
participant execute as Ejecutar función

Sie werden die JSON-<abbr title="Response – Antwort: Daten, die der Server zum anfragenden Client zurücksendet">Response</abbr> sehen:

```JSON
{"message": "Hello World"}
```

### Interaktive API-Dokumentation { #interactive-api-docs }

Gehen Sie als Nächstes auf <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

Por exemplo, se você tiver uma função:

```Python
@lru_cache
def say_hi(name: str, salutation: str = "Ms."):
    return f"Hello {salutation} {name}"
```

seu programa poderia executar assim:

```mermaid
sequenceDiagram

participant code as Code
participant function as say_hi()
participant execute as Execute function

   * that tests equivalence using their lengths:
   *
   * {@snippet :
   * equiv.wrap("a").equals(equiv.wrap("b")) // true
   * equiv.wrap("a").equals(equiv.wrap("hello")) // false
   * }
   *
   * <p>Note in particular that an equivalence wrapper is never equal to the object it wraps.
   *
   * {@snippet :
   * equiv.wrap(obj).equals(obj) // always false
   * }
   *

          public void run() {
            AbstractFuture<String> future = setFutureFuture.get();
            setFutureSetSuccess.set(currentFuture.get().setFuture(future));
            setFutureCompletionSuccess.set(future.set("hello-async-world"));
            awaitUnchecked(barrier);
          }
        };
    Set<Object> finalResults = Collections.synchronizedSet(Sets.newIdentityHashSet());
    Runnable collectResultsRunnable =