"type": "object",
                    "properties": {
                        "loc": {
                            "title": "Location",
                            "type": "array",
                            "items": {
                                "anyOf": [{"type": "string"}, {"type": "integer"}]
                            },
                        },

```Python hl_lines="7"
{!../../../docs_src/first_steps/tutorial003.py!}
```

!!! note
    If you don't know the difference, check the [Async: *"In a hurry?"*](../async.md#in-a-hurry){.internal-link target=_blank}.

### Step 5: return the content

```Python hl_lines="8"
{!../../../docs_src/first_steps/tutorial001.py!}
```

@app.get("/items/{item_id}")
async def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

**Przypis**:

Jeżeli nie znasz, sprawdź sekcję _"In a hurry?"_ o <a href="https://fastapi.tiangolo.com/async/#in-a-hurry" target="_blank">`async` i `await` w dokumentacji</a>.

</details>

### Uruchom

Uruchom serwer używając:

<div class="termy">

```console

@app.get("/items/{item_id}")
async def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

**Note**:

如果你不知道是否会用到，可以查看文档的 _"In a hurry?"_ 章节中 <a href="https://fastapi.tiangolo.com/zh/async/#in-a-hurry" target="_blank">关于 `async` 和 `await` 的部分</a>。

</details>

### 运行

通过以下命令运行服务器：

<div class="termy">

```console
$ uvicorn main:app --reload

    return {"item_id": item_id, "q": q}
```

**Примечание**:

Если вы не знаете, проверьте раздел _"Торопитесь?"_ <a href="https://fastapi.tiangolo.com/async/#in-a-hurry" target="_blank">в документации об `async` и `await`</a>.

</details>

### Запуск

Запустите сервер с помощью:

<div class="termy">

```console
$ uvicorn main:app --reload

                    "type": "object",
                    "properties": {
                        "loc": {
                            "title": "Location",
                            "type": "array",
                            "items": {
                                "anyOf": [{"type": "string"}, {"type": "integer"}]
                            },
                        },

    return {"item_id": item_id, "q": q}
```

**Megjegyzés**:

Ha nem tudod, tekintsd meg a _"Sietsz?"_ szekciót <a href="https://fastapi.tiangolo.com/async/#in-a-hurry" target="_blank">`async` és `await`-ről dokumentációba</a>.

</details>

### Futtasd le

Indítsd el a szervert a következő paranccsal:

<div class="termy">

```console

But by default, it all **"just works"**.

### Validation

* Validation for most (or all?) Python **data types**, including:
    * JSON objects (`dict`).
    * JSON array (`list`) defining item types.
    * String (`str`) fields, defining min and max lengths.
    * Numbers (`int`, `float`) with min and max values, etc.

* Validation for more exotic types, like:
    * URL.
    * Email.

@app.get("/items/{item_id}")
async def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

**Nota**:

Se você não sabe, verifique a seção _"In a hurry?"_ sobre <a href="https://fastapi.tiangolo.com/async/#in-a-hurry" target="_blank">`async` e `await` nas docs</a>.

</details>

### Rode

Rode o servidor com:

<div class="termy">

```console
$ uvicorn main:app --reload

@app.get("/items/{item_id}")
async def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

**Lưu ý**:

Nếu bạn không biết, xem phần _"In a hurry?"_ về <a href="https://fastapi.tiangolo.com/async/#in-a-hurry" target="_blank">`async` và `await` trong tài liệu này</a>.

</details>

### Chạy ứng dụng

Chạy server như sau:

<div class="termy">

```console