* Validatie zelfs voor diep geneste JSON objecten.
* <abbr title="ook bekend als: serialisatie, parsing, marshalling">Conversie</abbr> van invoergegevens: afkomstig van het netwerk naar Python-data en -types. Zoals:
    * JSON.
    * Pad parameters.
    * Query parameters.
    * Cookies.
    * Headers.
    * Formulieren.
    * Bestanden.

Details zur `async def`-Syntax für *Pfadoperation-Funktionen* und Hintergrundinformationen zu asynchronem Code, Nebenläufigkeit und Parallelität.

## In Eile?

<abbr title="too long; didn't read – Zu lang; nicht gelesen"><strong>TL;DR:</strong></abbr>

Wenn Sie Bibliotheken von Dritten verwenden, die mit `await` aufgerufen werden müssen, wie zum Beispiel:

```Python
results = await some_library()
```

    * Das ist eine Schicht **unter HTTP**.
    * Die Handhabung von **Zertifikaten und Verschlüsselung** erfolgt also **vor HTTP**.
* **TCP weiß nichts über „<abbr title="Domäne, Bereich, Wirkungsraum">Domains</abbr>“**. Nur über IP-Adressen.
    * Die Informationen über die angeforderte **spezifische Domain** befinden sich in den **HTTP-Daten**.

在進行一次宣告後，你將獲得：

- 編輯器支援：
    - 自動補全
    - 型別檢查
- 資料驗證：
    - 驗證失敗時自動生成清楚的錯誤訊息
    - 可驗證多層巢狀的 JSON 物件
- <abbr title="也被稱為： 序列化或解析">轉換</abbr>輸入的資料： 轉換來自網路請求到 Python 資料型別。包含以下數據：
    - JSON
    - 路徑參數
    - 查詢參數
    - Cookies
    - 請求標頭
    - 表單
    - 文件
- <abbr title="也被稱為： 序列化或解析">轉換</abbr>輸出的資料： 轉換 Python 資料型別到網路傳輸的 JSON：
    - 轉換 Python 型別 (`str`、 `int`、 `float`、 `bool`、 `list` 等)
    - `datetime` 物件

# 🐍 🆎 🎶

🐍 ✔️ 🐕‍🦺 📦 "🆎 🔑".

👫 **"🆎 🔑"** 🎁 ❕ 👈 ✔ 📣 <abbr title="for example: str, int, float, bool">🆎</abbr> 🔢.

📣 🆎 👆 🔢, 👨‍🎨 &amp; 🧰 💪 🤝 👆 👍 🐕‍🦺.

👉 **⏩ 🔰 / ↗️** 🔃 🐍 🆎 🔑. ⚫️ 📔 🕴 💯 💪 ⚙️ 👫 ⏮️ **FastAPI**... ❔ 🤙 📶 🐥.

**FastAPI** 🌐 ⚓️ 🔛 👫 🆎 🔑, 👫 🤝 ⚫️ 📚 📈 &amp; 💰.

✋️ 🚥 👆 🙅 ⚙️ **FastAPI**, 👆 🔜 💰 ⚪️➡️ 🏫 🍖 🔃 👫.

/// note

🚥 👆 🐍 🕴, &amp; 👆 ⏪ 💭 🌐 🔃 🆎 🔑, 🚶 ⏭ 📃.

/// tip

In the next chapter, you will see a real secure implementation, with password hashing and <abbr title="JSON Web Tokens">JWT</abbr> tokens.

But for now, let's focus on the specific details we need.

///

//// tab | Python 3.10+

```Python hl_lines="87"
{!> ../../docs_src/security/tutorial003_an_py310.py!}

# Python Types Intro

Python has support for optional "type hints" (also called "type annotations").

These **"type hints"** or annotations are a special syntax that allow declaring the <abbr title="for example: str, int, float, bool">type</abbr> of a variable.

By declaring types for your variables, editors and tools can give you better support.

* Bemeneti adatok<abbr title="also known as: serialization, parsing, marshalling"> átváltása</abbr> : a hálózatról érkező Python adatokká és típusokká. Adatok olvasása következő forrásokból:
    * JSON.
    * Cím paraméterek.
    * Query paraméterek.
    * Cookie-k.
    * Header-ök.
    * Formok.
    * Fájlok.

/// tip

To know more about each status code and which code is for what, check the <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Status" class="external-link" target="_blank"><abbr title="Mozilla Developer Network">MDN</abbr> documentation about HTTP status codes</a>.

///

## Shortcut to remember the names

Let's see the previous example again:

{* ../../docs_src/response_status_code/tutorial001.py hl[6] *}

    Neste caso, é uma lista de dataclasses `Item`.

6. Aqui estamos retornando um dicionário que contém `items`, que é uma lista de dataclasses.

    O FastAPI ainda é capaz de <abbr title="converter os dados para um formato que pode ser transmitido">serializar</abbr> os dados para JSON.

7. Aqui o `response_model` está usando uma anotação de tipo de uma lista de dataclasses `Author`.