* <a href="https://github.com/Kludex/python-multipart" target="_blank"><code>python-multipart</code></a> - ✔ 🚥 👆 💚 🐕‍🦺 📨 <abbr title="converting the string that comes from an HTTP request into Python data">"✍"</abbr>, ⏮️ `request.form()`.
* <a href="https://pythonhosted.org/itsdangerous/" target="_blank"><code>itsdangerous</code></a> - ✔ `SessionMiddleware` 🐕‍🦺.

    ```Python hl_lines="8-9"
    {!> ../../../docs_src/dependencies/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="8-11"
    {!> ../../../docs_src/dependencies/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="9-12"
    {!> ../../../docs_src/dependencies/tutorial001_an.py!}
    ```

=== "Python 3.10+ nicht annotiert"

    !!! tip "Tipp"

    ```Python hl_lines="8-9"
    {!> ../../../docs_src/dependencies/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="8-11"
    {!> ../../../docs_src/dependencies/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="9-12"
    {!> ../../../docs_src/dependencies/tutorial001_an.py!}
    ```

=== "Python 3.10+ non-Annotated"

    !!! tip "Подсказка"

OAuth2 is a specification that defines several ways to handle authentication and authorization.

It is quite an extensive specification and covers several complex use cases.

It includes ways to authenticate using a "third party".

That's what all the systems with "login with Facebook, Google, Twitter, GitHub" use underneath.

### OAuth 1

* <a href="https://github.com/Kludex/python-multipart" target="_blank"><code>python-multipart</code></a> - Követelmény ha <abbr title="converting the string that comes from an HTTP request into Python data">"parsing"</abbr>-ot akarsz támogatni, `request.form()`-al.
* <a href="https://pythonhosted.org/itsdangerous/" target="_blank"><code>itsdangerous</code></a> - Követelmény `SessionMiddleware` támogatáshoz.

- <a href="https://github.com/Kludex/python-multipart" target="_blank"><code>python-multipart</code></a> - আপনি যদি ফর্ম সহায়তা করতে চান তাহলে প্রয়োজন <abbr title="converting the string that comes from an HTTP request into Python data">"parsing"</abbr>, `request.form()` সহ।
- <a href="https://pythonhosted.org/itsdangerous/" target="_blank"><code>itsdangerous</code></a> - `SessionMiddleware` সহায়তার জন্য প্রয়োজন।

```JSON
{"item_id": 5, "q": "somequery"}
```

You already created an API that:

* Receives HTTP requests in the _paths_ `/` and `/items/{item_id}`.
* Both _paths_ take `GET` operations (also known as HTTP _methods_).
* The _path_ `/items/{item_id}` has a _path parameter_ `item_id` that should be an `int`.
* The _path_ `/items/{item_id}` has an optional `str` _query parameter_ `q`.

### Interactive API docs

---

„_Wenn Sie ein **modernes Framework** zum Erstellen von REST-APIs erlernen möchten, schauen Sie sich **FastAPI** an. [...] Es ist schnell, einfach zu verwenden und leicht zu erlernen [...]_“

„_Wir haben zu **FastAPI** für unsere **APIs** gewechselt [...] Ich denke, es wird Ihnen gefallen [...]_“

Aber Sie müssen immer noch definieren, was das <abbr title="Das von dem abhängt, die zu verwendende Abhängigkeit">Dependable</abbr>, das Callable ist, welches Sie als Parameter an `Depends()` oder `Security()` übergeben.

# Deployment

Deploying a **FastAPI** application is relatively easy.

## What Does Deployment Mean

To **deploy** an application means to perform the necessary steps to make it **available to the users**.

For a **web API**, it normally involves putting it in a **remote machine**, with a **server program** that provides good performance, stability, etc, so that your **users** can **access** the application efficiently and without interruptions or problems.