```

就能以如下方式调用：

```Python
user_dict = user_in.model_dump()
```

现在，变量 `user_dict` 中的是包含数据的 `dict`（它是 `dict`，不是 Pydantic 模型对象）。

以如下方式调用：

```Python
print(user_dict)
```

输出的就是 Python `dict`：

```Python
{
    'username': 'john',
    'password': 'secret',
    'email': 'john.doe@example.com',
    'full_name': None,
}
```

```Python
from unicorn import UnicornMiddleware

app = SomeASGIApp()

new_app = UnicornMiddleware(app, some_config="rainbow")
```

Mais FastAPI (en fait Starlette) fournit une manière plus simple de le faire, qui garantit que les middlewares internes gèrent les erreurs serveur et que les gestionnaires d'exceptions personnalisés fonctionnent correctement.

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-01-swagger-ui-simple.png)

### Alternative API docs { #alternative-api-docs }

And now, go to [http://127.0.0.1:8000/redoc](http://127.0.0.1:8000/redoc).

You will see the alternative automatic documentation (provided by [ReDoc](https://github.com/Rebilly/ReDoc)):

![ReDoc](https://fastapi.tiangolo.com/img/index/index-02-redoc-simple.png)

### OpenAPI { #openapi }

El `TestClient` está basado en [HTTPX](https://www.python-httpx.org), y afortunadamente, podemos usarlo directamente para probar la API.

## Ejemplo { #example }

Para un ejemplo simple, consideremos una estructura de archivos similar a la descrita en [Aplicaciones Más Grandes](../tutorial/bigger-applications.md) y [Testing](../tutorial/testing.md):

```
.
├── app
│   ├── __init__.py

Le `TestClient` est basé sur [HTTPX](https://www.python-httpx.org) et, heureusement, nous pouvons l'utiliser directement pour tester l'API.

## Exemple { #example }

Pour un exemple simple, considérons une structure de fichiers similaire à celle décrite dans [Applications plus grandes](../tutorial/bigger-applications.md) et [Tests](../tutorial/testing.md) :

```
.
├── app
│   ├── __init__.py

Kullanıcının düz metin (plaintext) `password`'ünü asla saklamayın. Her zaman sonradan doğrulayabileceğiniz "güvenli bir hash" saklayın.

Eğer bilmiyorsanız, "password hash" nedir konusunu [güvenlik bölümlerinde](security/simple-oauth2.md#password-hashing) öğreneceksiniz.

///

## Birden Çok Model { #multiple-models }

`password` alanlarıyla birlikte modellerin genel olarak nasıl görünebileceğine ve nerelerde kullanılacaklarına dair bir fikir:

Activating a virtual environment also changes a couple of other things, but this is one of the most important things it does.

## Checking a Virtual Environment { #checking-a-virtual-environment }

When you check if a virtual environment is active, for example with:

//// tab | Linux, macOS, Windows Bash

#### Non-calculated values

These are inappropriate uses of lazy types:

```groovy
class Example {
    Property<String> getSomeProperty()

    Example() {
        getSomeProperty().set("value")
        getSomeProperty().disallowChanges()
    }
}

class Example2 {
    Provider<String> getSomeProperty() {

### Alternative API docs { #alternative-api-docs }

And now, go to [http://127.0.0.1:8000/redoc](http://127.0.0.1:8000/redoc).

You will see the alternative automatic documentation (provided by [ReDoc](https://github.com/Rebilly/ReDoc)):

![ReDoc](https://fastapi.tiangolo.com/img/index/index-02-redoc-simple.png)

## Example upgrade { #example-upgrade }

默认情况下，这个 `CORSMiddleware` 实现所使用的默认参数较为保守，所以你需要显式地启用特定的源、方法或者 headers，以便浏览器能够在跨域上下文中使用它们。

支持以下参数：

* `allow_origins` - 一个允许跨域请求的源列表。例如 `['https://example.org', 'https://www.example.org']`。你可以使用 `['*']` 允许任何源。
* `allow_origin_regex` - 一个正则表达式字符串，匹配的源允许跨域请求。例如 `'https://.*\.example\.org'`。
* `allow_methods` - 一个允许跨域请求的 HTTP 方法列表。默认为 `['GET']`。你可以使用 `['*']` 来允许所有标准方法。