If you need a 2 minute refresher of how to use Python types (even if you don't use FastAPI), check the short tutorial: [Python Types](python-types.md){.internal-link target=_blank}.

You write standard Python with types:

```Python
from datetime import date

from pydantic import BaseModel

# Declare a variable as a str

Jeśli potrzebujesz szybkiego przypomnienia jak używać deklaracji typów w Pythonie (nawet jeśli nie używasz FastAPI), sprawdź krótki samouczek: [Python Types](python-types.md){.internal-link target=_blank}.

Wystarczy, że napiszesz standardowe deklaracje typów Pythona:

```Python
from datetime import date

from pydantic import BaseModel

# Zadeklaruj parametr jako str

Eğer Python type hintlerini bilmiyorsan veya bir hatırlatmaya ihtiyacın var ise(FastAPI kullanmasan bile) şu iki dakikalık küçük bilgilendirici içeriğe bir göz at: [Python Types](python-types.md){.internal-link target=_blank}.

Standart Python'u typelarını belirterek yazıyorsun:

```Python
from typing import List, Dict
from datetime import date

from pydantic import BaseModel

Büyük bulut sağlayıcıların çoğu FastAPI uygulamasını yayınlamak için kılavuzlara sahiptir.

## Bulut Sağlayıcılar - Sponsorlar

Bazı bulut sağlayıcılar ✨ [**FastAPI destekçileridir**](../help-fastapi.md#sponsor-the-author){.internal-link target=_blank} ✨, bu FastAPI ve **ekosisteminin** sürekli ve sağlıklı bir şekilde **gelişmesini** sağlar.

### 그저 현대 파이썬

(Pydantic 덕분에) FastAPI는 표준 **파이썬 3.6 타입** 선언에 기반하고 있습니다. 새로 배울 문법이 없습니다. 그저 표준적인 현대 파이썬입니다.

만약 여러분이 파이썬 타입을 어떻게 사용하는지에 대한 2분 정도의 복습이 필요하다면 (비록 여러분이 FastAPI를 사용하지 않는다 하더라도), 다음의 짧은 자습서를 확인하세요: [파이썬 타입](python-types.md){.internal-link target=\_blank}.

여러분은 타입을 이용한 표준 파이썬을 다음과 같이 적을 수 있습니다:

```Python
from datetime import date

from pydantic import BaseModel

# 변수를 str로 선언
# 그 후 함수 안에서 편집기 지원을 받으세요

/// tip

请记住可以 <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">用'X-' 前缀</a>添加专有自定义请求头.

但是如果你想让浏览器中的客户端看到你的自定义请求头, 你需要把它们加到 CORS 配置 ([CORS (Cross-Origin Resource Sharing)](cors.md){.internal-link target=_blank}) 的 `expose_headers` 参数中,在 <a href="https://www.starlette.io/middleware/#corsmiddleware" class="external-link" target="_blank">Starlette's CORS docs</a>文档中.

///

/// note | "技术细节"

## Versions disponibles

Vous pouvez consulter les versions disponibles (par exemple, pour vérifier quelle est la dernière version en date) dans les [Notes de version](../release-notes.md){.internal-link target=_blank}.

## À propos des versions

Suivant les conventions de versionnage sémantique, toute version inférieure à `1.0.0` peut potentiellement ajouter
des changements non rétrocompatibles.

# Advanced Middleware

In the main tutorial you read how to add [Custom Middleware](../tutorial/middleware.md){.internal-link target=_blank} to your application.

And then you also read how to handle [CORS with the `CORSMiddleware`](../tutorial/cors.md){.internal-link target=_blank}.

In this section we'll see how to use other middlewares.

## Adding ASGI middlewares

* For error messages related changes, follow the [ErrorMessages Guide](contributing/ErrorMessages.md).
* For Javadocs, follow the [Javadoc Style Guide](contributing/JavadocStyleGuide.md).
* For new features, the feature should be mentioned in the [Release Notes](platforms/documentation/docs/src/docs/release/notes.md).

```Python hl_lines="21  26"
{!../../docs_src/metadata/tutorial004.py!}
```

/// info

Read more about tags in [Path Operation Configuration](path-operation-configuration.md#tags){.internal-link target=_blank}.

///

### Check the docs

Now, if you check the docs, they will show all the additional metadata:

<img src="/img/tutorial/metadata/image02.png">

### Order of tags