**FastAPI** wouldn't exist if not for the previous work of others.

There have been many tools created before that have helped inspire its creation.

I have been avoiding the creation of a new framework for several years. First I tried to solve all the features covered by **FastAPI** using many different frameworks, plug-ins, and tools.

            - iter_bytes
            - iter_json
            - send_text
            - send_bytes
            - send_json
            - close

When a client disconnects, a `WebSocketDisconnect` exception is raised, you can catch it.

You can import it directly form `fastapi`:

```python
from fastapi import WebSocketDisconnect
```

::: fastapi.WebSocketDisconnect

## WebSockets - additional classes

After a week, the token will be expired and the user will not be authorized and will have to sign in again to get a new token. And if the user (or a third party) tried to modify the token to change the expiration, you would be able to discover it, because the signatures would not match.

* ✨ Add support in `jsonable_encoder` for include and exclude with dataclasses. PR [#4923](https://github.com/tiangolo/fastapi/pull/4923) by [@DCsunset](https://github.com/DCsunset).

### Fixes

* 🐛 Fix `RuntimeError` raised when `HTTPException` has a status code with no content. PR [#5365](https://github.com/tiangolo/fastapi/pull/5365) by [@iudeen](https://github.com/iudeen).

Des changements sur Pydantic ont même été faits pour supporter cela.

Les captures d'écrans précédentes ont été prises sur <a href="https://code.visualstudio.com" class="external-link" target="_blank">Visual Studio Code</a>.

Avec **FastAPI** vous aurez toutes les fonctionnalités de **Pydantic**  (comme FastAPI est basé sur Pydantic pour toutes les manipulations de données):

* **Pas de prise de tête**:
    * Pas de nouveau langage de définition de schéma à apprendre.
    * Si vous connaissez le typage en python vous savez comment utiliser Pydantic.

---

"_**Netflix** a le plaisir d'annoncer la sortie en open-source de notre framework d'orchestration de **gestion de crise** : **Dispatch** ! [construit avec **FastAPI**]_"

  - author: Mandy Gu
    author_link: https://towardsdatascience.com/@mandygu
    link: https://towardsdatascience.com/deploying-iris-classifications-with-fastapi-and-docker-7c9b83fdec3a
    title: 'Towards Data Science: Deploying Iris Classifications with FastAPI and Docker'
  - author: Michael Herman
    author_link: https://testdriven.io/authors/herman
    link: https://testdriven.io/blog/fastapi-crud/

Comme les paramètres sont décrits avec des types TypeScript (similaires aux type hints de Python), la prise en charge
par l'éditeur est assez bonne.

                    body=e.doc,
                )
                raise validation_error from e
            except HTTPException:
                # If a middleware raises an HTTPException, it should be raised again
                raise
            except Exception as e:
                http_error = HTTPException(
                    status_code=400, detail="There was an error parsing the body"
                )