{
            "detail": [
                {
                    "type": "int_parsing",
                    "loc": ["query", "q", 0],
                    "msg": "Input should be a valid integer, unable to parse string as an integer",
                    "input": "five",
                },
                {
                    "type": "int_parsing",
                    "loc": ["query", "q", 1],

                    "loc": ["body", 0, "name"],
                    "msg": "Field required",
                    "input": {"age": "five"},
                },
                {
                    "type": "decimal_parsing",
                    "loc": ["body", 0, "age"],
                    "msg": "Input should be a valid decimal",
                    "input": "five",
                },
                {

    * FastAPI, Starlette'e ek olarak daha fazla özellik sunar. Bunlar veri doğrulama ve <abbr title="Dönüşüm: serialization, parsing, marshalling olarak da biliniyor">dönüşümü</abbr> gibi API'lar oluştururken neredeyse ve her zaman ihtiyaç duyduğunuz özelliklerdir. Ve bunu kullanarak, ücretsiz olarak otomatik dokümantasyon elde edersiniz (otomatik dokümantasyon çalışan uygulamalara...

An example could be that you have an external authentication provider that you need to call.

You send it a token and it returns an authenticated user.

This provider might be charging you per request, and calling it might take some extra time than if you had a fixed mock user for tests.

You probably want to test the external provider once, but not necessarily call it for every test that runs.

    assert response.status_code == 422
    assert response.json() == IsDict(
        {
            "detail": [
                {
                    "type": "float_parsing",
                    "loc": ["body", "price"],
                    "msg": "Input should be a valid number, unable to parse string as a number",
                    "input": "invalid price",
                }
            ]

    response = client.put("/items/foo", json=None)
    assert response.status_code == 422
    assert response.json() == IsDict(
        {
            "detail": [
                {
                    "type": "int_parsing",
                    "loc": ["path", "item_id"],
                    "msg": "Input should be a valid integer, unable to parse string as an integer",
                    "input": "foo",
                }
            ]

* <abbr title="also known as: serialization, parsing, marshalling">Conversion</abbr> of input data: coming from the network to Python data and types. Reading from:
    * JSON.
    * Path parameters.
    * Query parameters.
    * Cookies.
    * Headers.
    * Forms.
    * Files.

`HTTPException` is a normal Python exception with additional data relevant for APIs.

Because it's a Python exception, you don't `return` it, you `raise` it.

    * تکمیل کد.
    * بررسی انواع داده.
* اعتبارسنجی داده:
    * خطاهای خودکار و مشخص در هنگام نامعتبر بودن داده.
    * اعتبارسنجی، حتی برای اشیاء JSON تو در تو.
* <abbr title="serialization, parsing, marshalling">تبدیل</abbr> داده ورودی: که از شبکه رسیده به انواع و داد‌ه‌ پایتونی. این داده‌ شامل:
    * JSON.
    * <abbr title="Path parameters">پارامترهای مسیر</abbr>.

{!../../../docs_src/path_params/tutorial002.py!}
```

👉 💼, `item_id` 📣 `int`.

!!! check
    👉 🔜 🤝 👆 👨‍🎨 🐕‍🦺 🔘 👆 🔢, ⏮️ ❌ ✅, 🛠️, ♒️.

## 💽 <abbr title="also known as: serialization, parsing, marshalling">🛠️</abbr>

🚥 👆 🏃 👉 🖼 &amp; 📂 👆 🖥 <a href="http://127.0.0.1:8000/items/3" class="external-link" target="_blank">http://127.0.0.1:8000/items/3</a>, 👆 🔜 👀 📨:

```JSON
{"item_id":3}
```