{!../../../docs_src/handling_errors/tutorial004.py!}
```

Now, if you go to `/items/foo`, instead of getting the default JSON error with:

```JSON
{
    "detail": [
        {
            "loc": [
                "path",
                "item_id"
            ],
            "msg": "value is not a valid integer",
            "type": "type_error.integer"
        }
    ]
}
```

{!../../../docs_src/handling_errors/tutorial004.py!}
```

Теперь, если перейти к `/items/foo`, то вместо стандартной JSON-ошибки с:

```JSON
{
    "detail": [
        {
            "loc": [
                "path",
                "item_id"
            ],
            "msg": "value is not a valid integer",
            "type": "type_error.integer"
        }
    ]
}
```

{!../../../docs_src/handling_errors/tutorial004.py!}
```

Se você for ao `/items/foo`, em vez de receber o JSON padrão com o erro:

```JSON
{
    "detail": [
        {
            "loc": [
                "path",
                "item_id"
            ],
            "msg": "value is not a valid integer",
            "type": "type_error.integer"
        }
    ]
}
```

{!../../../docs_src/handling_errors/tutorial004.py!}
```

Wenn Sie nun `/items/foo` besuchen, erhalten Sie statt des Default-JSON-Errors:

```JSON
{
    "detail": [
        {
            "loc": [
                "path",
                "item_id"
            ],
            "msg": "value is not a valid integer",
            "type": "type_error.integer"
        }
    ]
}
```

```Python hl_lines="2  14-16"
{!../../../docs_src/handling_errors/tutorial004.py!}

```

访问 `/items/foo`，可以看到默认的 JSON 错误信息：

```JSON
{
    "detail": [
        {
            "loc": [
                "path",
                "item_id"
            ],
            "msg": "value is not a valid integer",
            "type": "type_error.integer"
        }
    ]
}

```

```Python hl_lines="2  14-16"
{!../../../docs_src/handling_errors/tutorial004.py!}
```

🔜, 🚥 👆 🚶 `/items/foo`, ↩️ 💆‍♂ 🔢 🎻 ❌ ⏮️:

```JSON
{
    "detail": [
        {
            "loc": [
                "path",
                "item_id"
            ],
            "msg": "value is not a valid integer",
            "type": "type_error.integer"
        }
    ]
}
```

```Python hl_lines="2 14 15 16"
{!../../../docs_src/handling_errors/tutorial004.py!}
```

これで、`/items/foo`にアクセスすると、デフォルトのJSONエラーの代わりに以下が返されます:

```JSON
{
    "detail": [
        {
            "loc": [
                "path",
                "item_id"
            ],
            "msg": "value is not a valid integer",
            "type": "type_error.integer"
        }
    ]
}
```