///

## Mehrere Modelle

Hier der generelle Weg, wie die Modelle mit ihren Passwort-Feldern aussehen könnten, und an welchen Orten sie verwendet werden würden.

{* ../../docs_src/extra_models/tutorial001_py310.py hl[7,9,14,20,22,27:28,31:33,38:39] *}

/// info

In Pydantic v1 hieß diese Methode `.dict()`, in Pydantic v2 wurde sie deprecated (aber immer noch unterstützt) und in `.model_dump()` umbenannt.

{* ../../docs_src/python_types/tutorial003.py hl[1] *}


Editör değişkenlerin tiplerini bildiğinden, yalnızca otomatik tamamlama değil, hata kontrolleri de sağlar:

<img src="/img/python-types/image04.png">

Artık `age` değişkenini `str(age)` olarak kullanmanız gerektiğini biliyorsunuz:

{* ../../docs_src/python_types/tutorial004.py hl[2] *}


## Tip bildirme

✋️ FastAPI 🐕‍🦺 ⚙️ <a href="https://docs.python.org/3/library/dataclasses.html" class="external-link" target="_blank">`dataclasses`</a> 🎏 🌌:

{* ../../docs_src/dataclasses/tutorial001.py hl[1,7:12,19:20] *}

👉 🐕‍🦺 👏 **Pydantic**, ⚫️ ✔️ <a href="https://docs.pydantic.dev/latest/concepts/dataclasses/#use-of-stdlib-dataclasses-with-basemodel" class="external-link" target="_blank">🔗 🐕‍🦺 `dataclasses`</a>.

//// tab | Pydantic v2

{* ../../docs_src/schema_extra_example/tutorial001_py310.py hl[13:24] *}

////

//// tab | Pydantic v1

{* ../../docs_src/schema_extra_example/tutorial001_pv1_py310.py hl[13:23] *}

////

That extra info will be added as-is to the output **JSON Schema** for that model, and it will be used in the API docs.

///

## Pydantic의 `BaseModel` 임포트

먼저 `pydantic`에서 `BaseModel`를 임포트해야 합니다:

{* ../../docs_src/body/tutorial001_py310.py hl[2] *}

## 여러분의 데이터 모델 만들기

`BaseModel`를 상속받은 클래스로 여러분의 데이터 모델을 선언합니다.

모든 어트리뷰트에 대해 표준 파이썬 타입을 사용합니다:

{* ../../docs_src/body/tutorial001_py310.py hl[5:9] *}

쿼리 매개변수를 선언할 때와 같이, 모델 어트리뷰트가 기본 값을 가지고 있어도 이는 필수가 아닙니다. 그외에는 필수입니다. 그저 `None`을 사용하여 선택적으로 만들 수 있습니다.

///

## Multiple models { #multiple-models }

Here's a general idea of how the models could look like with their password fields and the places where they are used:

{* ../../docs_src/extra_models/tutorial001_py310.py hl[7,9,14,20,22,27:28,31:33,38:39] *}


/// info

In Pydantic v1 the method was called `.dict()`, it was deprecated (but still supported) in Pydantic v2, and renamed to `.model_dump()`.

🚥 👆 👈, ⤴️ 👆 💪 📨 📛 🔗 ⚪️➡️ 👆 *➡ 🛠️* 🔢.

👉 💼, `status_code` ⚙️ 🔜 🔢 1️⃣ `RedirectResponse`, ❔ `307`.

---

👆 💪 ⚙️ `status_code` 🔢 🌀 ⏮️ `response_class` 🔢:

{* ../../docs_src/custom_response/tutorial006c.py hl[2,7,9] *}

### `StreamingResponse`

✊ 🔁 🚂 ⚖️ 😐 🚂/🎻 & 🎏 📨 💪.

{* ../../docs_src/custom_response/tutorial007.py hl[2,14] *}

{* ../../docs_src/dependencies/tutorial007.py hl[2:4] *}

Полученное значение и есть то, что будет внедрено в функцию операции пути и другие зависимости:

{* ../../docs_src/dependencies/tutorial007.py hl[4] *}

Код, следующий за оператором `yield`, выполняется после доставки ответа:

{* ../../docs_src/dependencies/tutorial007.py hl[5:6] *}

/// tip | Подсказка

🤶 Ⓜ. `pip install python-multipart`.

///

## 🗄 `File` & `Form`

{* ../../docs_src/request_forms_and_files/tutorial001.py hl[1] *}

## 🔬 `File` & `Form` 🔢

✍ 📁 & 📨 🔢 🎏 🌌 👆 🔜 `Body` ⚖️ `Query`:

{* ../../docs_src/request_forms_and_files/tutorial001.py hl[8] *}

📁 & 📨 🏑 🔜 📂 📨 📊 & 👆 🔜 📨 📁 & 📨 🏑.

& 👆 💪 📣 📁 `bytes` & `UploadFile`.

/// warning

### `OAuth2PasswordRequestForm`

Importieren Sie zunächst `OAuth2PasswordRequestForm` und verwenden Sie es als Abhängigkeit mit `Depends` in der *Pfadoperation* für `/token`:

{* ../../docs_src/security/tutorial003_an_py310.py hl[4,78] *}

`OAuth2PasswordRequestForm` ist eine Klassenabhängigkeit, die einen Formularbody deklariert mit:

* Dem `username`.
* Dem `password`.