=== "Python 3.10+"

    ```Python hl_lines="23-49"
    {!> ../../../docs_src/schema_extra_example/tutorial004_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="23-49"
    {!> ../../../docs_src/schema_extra_example/tutorial004_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="24-50"

Sie können es so verwenden:

=== "Python 3.10+"

    ```Python hl_lines="23-49"
    {!> ../../../docs_src/schema_extra_example/tutorial005_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="23-49"
    {!> ../../../docs_src/schema_extra_example/tutorial005_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="24-50"

You can use it like this:

=== "Python 3.10+"

    ```Python hl_lines="23-49"
    {!> ../../../docs_src/schema_extra_example/tutorial005_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="23-49"
    {!> ../../../docs_src/schema_extra_example/tutorial005_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="24-50"

Аналогичным образом можно переопределить обработчик `HTTPException`.

Например, для этих ошибок можно вернуть обычный текстовый ответ вместо JSON:

```Python hl_lines="3-4  9-11  22"
{!../../../docs_src/handling_errors/tutorial004.py!}
```

!!! note "Технические детали"
    Можно также использовать `from starlette.responses import PlainTextResponse`.

Do mesmo modo, você pode sobreescrever o `HTTPException`.

Por exemplo, você pode querer retornar uma *response* em *plain text* ao invés de um JSON para os seguintes erros:

```Python hl_lines="3-4  9-11  22"
{!../../../docs_src/handling_errors/tutorial004.py!}
```

!!! note "Detalhes Técnicos"
    Você pode usar `from starlette.responses import PlainTextResponse`.

Genauso können Sie den `HTTPException`-Handler überschreiben.

Zum Beispiel könnten Sie eine Klartext-Response statt JSON für diese Fehler zurückgeben wollen:

```Python hl_lines="3-4  9-11  22"
{!../../../docs_src/handling_errors/tutorial004.py!}
```

!!! note "Technische Details"
    Sie können auch `from starlette.responses import PlainTextResponse` verwenden.

修复错误时，客户端或用户不能访问错误的内部信息，否则会造成安全隐患。

### 覆盖 `HTTPException` 错误处理器

同理，也可以覆盖 `HTTPException` 处理器。

例如，只为错误返回纯文本响应，而不是返回 JSON 格式的内容：

```Python hl_lines="3-4  9-11  22"
{!../../../docs_src/handling_errors/tutorial004.py!}

```

!!! note "技术细节"

    还可以使用 `from starlette.responses import PlainTextResponse`。

The same way, you can override the `HTTPException` handler.

For example, you could want to return a plain text response instead of JSON for these errors:

```Python hl_lines="3-4  9-11  22"
{!../../../docs_src/handling_errors/tutorial004.py!}
```

!!! note "Technical Details"
    You could also use `from starlette.responses import PlainTextResponse`.

& ⏪ 👆 🔧 ⚫️, 👆 👩‍💻/👩‍💻 🚫🔜 🚫 ✔️ 🔐 🔗 ℹ 🔃 ❌, 👈 💪 🎦 💂‍♂ ⚠.

### 🔐 `HTTPException` ❌ 🐕‍🦺

🎏 🌌, 👆 💪 🔐 `HTTPException` 🐕‍🦺.

🖼, 👆 💪 💚 📨 ✅ ✍ 📨 ↩️ 🎻 👫 ❌:

```Python hl_lines="3-4  9-11  22"
{!../../../docs_src/handling_errors/tutorial004.py!}
```

!!! note "📡 ℹ"
    👆 💪 ⚙️ `from starlette.responses import PlainTextResponse`.

## Evoluindo o Exemplo

Agora modifique o arquivo `main.py` para receber um corpo para uma requisição `PUT`.

Declare o corpo utilizando tipos padrão Python, graças ao Pydantic.

```Python hl_lines="4  9-12  25-27"
from typing import Union

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    price: float