### Use cases: external service { #use-cases-external-service }

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.

## Fifi sórí ẹrọ

<div class="termy">

```console
$ pip install fastapi

---> 100%
```

</div>
Iwọ yóò tún nílò olupin ASGI, fún iṣelọpọ bii <a href="https://www.uvicorn.org" class="external-link" target="_blank">Uvicorn</a> tabi <a href="https://github.com/pgjones/hypercorn" class="external-link" target="_blank">Hypercorn</a>.

* <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Proto" class="external-link" target="_blank">X-Forwarded-Proto</a>
* <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Host" class="external-link" target="_blank">X-Forwarded-Host</a>

///

⏮️ 🖼 ✊ ⏮️ <a href="https://code.visualstudio.com" class="external-link" target="_blank">🎙 🎙 📟</a>.

✋️ 👆 🔜 🤚 🎏 👨‍🎨 🐕‍🦺 ⏮️ <a href="https://www.jetbrains.com/pycharm/" class="external-link" target="_blank">🗒</a> &amp; 🌅 🎏 🐍 👨‍🎨:

<img src="/img/tutorial/body/image05.png">

/// tip

Onların kurslarını denemek isteyebilirsiniz:

* <a href="https://training.talkpython.fm/fastapi-courses" class="external-link" target="_blank">Talk Python Training</a>

🚥 👆 💚 🤾 ⏮️ 🥙 🤝 &amp; 👀 ❔ 👫 👷, ✅ <a href="https://jwt.io/" class="external-link" target="_blank">https://jwt.io</a>.

## ❎ `python-jose`

👥 💪 ❎ `python-jose` 🏗 &amp; ✔ 🥙 🤝 🐍:

<div class="termy">

```console
$ pip install "python-jose[cryptography]"

---> 100%
```

</div>

<a href="https://github.com/mpdavis/python-jose" class="external-link" target="_blank">🐍-🇩🇬</a> 🚚 🔐 👩‍💻 ➕.

    * `Path()`
    * `Query()`
    * `Header()`
    * `Cookie()`

# Geçmişi, Tasarımı ve Geleceği

Bir süre önce, <a href="https://github.com/fastapi/fastapi/issues/3#issuecomment-454956920" class="external-link" target="_blank">bir **FastAPI** kullanıcısı sordu</a>:

> Bu projenin geçmişi nedir? Birkaç hafta içinde hiçbir yerden harika bir şeye dönüşmüş gibi görünüyor [...]

İşte o geçmişin bir kısmı.

## Alternatifler

Були навіть деякі зміни в самому Pydantic, щоб підтримати це.

Попередні скріншоти були зроблені у <a href="https://code.visualstudio.com" class="external-link" target="_blank">Visual Studio Code</a>.

Але ви отримаєте ту саму підтримку редактора у <a href="https://www.jetbrains.com/pycharm/" class="external-link" target="_blank">PyCharm</a> та більшість інших редакторів Python:

<img src="/img/tutorial/body/image05.png">

/// tip

На всех предыдущих скриншотах используется <a href="https://code.visualstudio.com" class="external-link" target="_blank">Visual Studio Code</a>.

Но у вас будет такая же поддержка и с <a href="https://www.jetbrains.com/pycharm/" class="external-link" target="_blank">PyCharm</a>, и вообще с любым редактором Python:

<img src="/img/tutorial/body/image05.png">

/// tip | Подсказка