* Node affinity has moved from annotations to api fields in the pod spec.  Node affinity that is defined in the annotations will be ignored. ([#37299](https://github.com/kubernetes/kubernetes/pull/37299), [@rrati](https://github.com/rrati))

#### "*Schema*"

Um "*schema*" é uma definição ou descrição de algo. Não o código que o implementa, mas apenas uma descrição abstrata.

#### API "*schema*"

Nesse caso, <a href="https://github.com/OAI/OpenAPI-Specification" class="external-link" target="_blank">OpenAPI</a> é uma especificação que determina como definir um *schema* da sua API.

///

## Arquivo de upload opcional

Você pode definir um arquivo como opcional utilizando as anotações de tipo padrão e definindo o valor padrão como `None`:

{* ../../docs_src/request_files/tutorial001_02_an_py310.py hl[9,17] *}

## `UploadFile` com Metadados Adicionais

Você também pode utilizar `File()` com `UploadFile`, por exemplo, para definir metadados adicionais:

///

## OAuth2 scopes and OpenAPI { #oauth2-scopes-and-openapi }

The OAuth2 specification defines "scopes" as a list of strings separated by spaces.

The content of each of these strings can have any format, but should not contain spaces.

These scopes represent "permissions".

In OpenAPI (e.g. the API docs), you can define "security schemes".

When one of these security schemes uses OAuth2, you can also declare and use scopes.

    * Eviction behavior depends on the mode in which NodeController is operating:
      * if the new state is "partialDisruption" or "fullDisruption" we call a user defined function that returns a new QPS to use (default 1/10 of the default rate, and the default rate respectively),
      * if the new state is "normal" we resume normal operation (go back to default limiter settings),

this._config.autoShowNewTab) {\n    let $item = $(item).clone()\n    if ($item.attr('href') === undefined) {\n      $item = $(item).parent('a').clone()\n    }\n\n    $item.find('.right, .search-path').remove()\n    let title = $item.find('p').text()\n    if (title === '') {\n      title = $item.text()\n    }\n\n    const link = $item.attr('href')\n    if (link === '#' || link === '' || link === undefined) {\n      return\n    }\n\n    const uniqueName = unescape(link).replace('./', '').replace(/[\"#&'./:=?[\\]]/gi,...

But it was created before there existed Python type hints. So, to define every <abbr title="the definition of how data should be formed">schema</abbr> you need to use specific utils and classes provided by Marshmallow.

/// check | Inspired **FastAPI** to

Use code to define "schemas" that provide data types and validation, automatically.

///

- New parameter `defaultingType` for `PodTopologySpread` plugin allows to use k8s defined or user provided default constraints ([#95048](https://github.com/kubernetes/kubernetes/pull/95048), [@alculquicondor](https://github.com/alculquicondor)) [SIG Scheduling]

    * Porque las estructuras de datos de pydantic son solo instances de clases que defines; autocompletado, linting, mypy y tu intuición deberían funcionar correctamente con tus datos validados.
* Valida **estructuras complejas**:
    * Uso de modelos jerárquicos de Pydantic, `List` y `Dict` de `typing` de Python, etc.
    * Y los validadores permiten definir, verificar y documentar de manera clara y fácil esquemas de datos complejos como JSON Schema.

C'est une fonction Python.

Elle sera appelée par **FastAPI** quand une requête sur l'URL `/` sera reçue via une opération `GET`.

Ici, c'est une fonction asynchrone (définie avec `async def`).

---

Vous pourriez aussi la définir comme une fonction classique plutôt qu'avec `async def` :

{* ../../docs_src/first_steps/tutorial003.py hl[7] *}

/// note