import types
from enum import Enum
from typing import Any, Callable, Dict, Set, Type, TypeVar, Union

from pydantic import BaseModel

DecoratedCallable = TypeVar("DecoratedCallable", bound=Callable[..., Any])
UnionType = getattr(types, "UnionType", Union)
ModelNameMap = Dict[Union[Type[BaseModel], Type[Enum]], str]

# Including WSGI - Flask, Django, others

You can mount WSGI applications as you saw with [Sub Applications - Mounts](sub-applications.md){.internal-link target=_blank}, [Behind a Proxy](behind-a-proxy.md){.internal-link target=_blank}.

For that, you can use the `WSGIMiddleware` and use it to wrap your WSGI application, for example, Flask, Django, etc.

## Using `WSGIMiddleware`

You need to import `WSGIMiddleware`.

## Sub Applications

---

Des exemples communs d'opérations "CPU bounds" sont les procédés qui requièrent des traitements mathématiques complexes.

Par exemple :

* Traitements d'**audio** et d'**images**.

And as most of the execution time is taken by actual work (instead of waiting), and the work in a computer is done by a <abbr title="Central Processing Unit">CPU</abbr>, they call these problems "CPU bound".

---

Common examples of CPU bound operations are things that require complex math processing.

For example:

* **Audio** or **image processing**.

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from starlette.routing import BaseRoute
from starlette.types import ASGIApp, Lifespan, Receive, Scope, Send
from typing_extensions import Annotated, Doc, deprecated

AppType = TypeVar("AppType", bound="FastAPI")


class FastAPI(Starlette):
    """
    `FastAPI` app class, the main entrypoint to use FastAPI.

    Read more in the

* etc.

Como el tiempo de ejecución se consume principalmente al esperar a operaciones de <abbr title = "Input and Output">I/O</abbr>, las llaman operaciones "<abbr title="atadas a Entrada y Salida">I/O bound</abbr>".

* получение результатов запроса к базе данных
* и т. д.

Поскольку в основном время тратится на ожидание выполнения операций <abbr title="Ввода-вывода">I/O</abbr>,
их обычно называют операциями, <abbr title="I/O bound">ограниченными скоростью ввода-вывода</abbr>.

Код называют "асинхронным", потому что компьютеру / программе не требуется "синхронизироваться" с медленной задачей и,

* usw.

Da die Ausführungszeit hier hauptsächlich durch das Warten auf <abbr title="Input and Output – Eingabe und Ausgabe">I/O</abbr>-Operationen verbraucht wird, nennt man dies auch „I/O-lastige“ („I/O bound“) Operationen.