Il effectue également la validation des données (même imbriquées les unes dans les autres), et permet de les documenter correctement (schéma OpenAPI et documentation auto-générée).

## Valeurs scalaires dans le body

</blockquote>

## 调研

通过使用之前所有的备选方案，我有机会从它们之中学到了很多东西，获取了很多想法，并以我和我的开发团队能想到的最好方式把这些思路整合成一体。

例如，大家都清楚，在理想状态下，它应该基于标准的 Python 类型提示。

而且，最好的方式是使用现有的标准。

因此，甚至在开发 **FastAPI** 前，我就花了几个月的时间研究 OpenAPI、JSON Schema、OAuth2 等规范。深入理解它们之间的关系、重叠及区别之处。

## 设计

然后，我又花了一些时间从用户角度（使用 FastAPI 的开发者）设计了开发者 **API**。

同时，我还在最流行的 Python 代码编辑器中测试了很多思路，包括 PyCharm、VS Code、基于 Jedi 的编辑器。

Тогда, подразумеваются атрибуты JSON, их типы данных и т.п.

#### OpenAPI и JSON Schema

OpenAPI описывает схему API. Эта схема содержит определения (или "схемы") данных, отправляемых и получаемых API. Для описания структуры данных в JSON используется стандарт **JSON Schema**.

#### Рассмотрим `openapi.json`

///

## OpenAPI and API docs

If you return additional status codes and responses directly, they won't be included in the OpenAPI schema (the API docs), because FastAPI doesn't have a way to know beforehand what you are going to return.

   *
   * ```
   * 0b00xxxxxx Universal
   * 0b01xxxxxx Application
   * 0b10xxxxxx Context-Specific
   * 0b11xxxxxx Private
   * ```
   */
  var tagClass: Int,
  /** Identifies which member in the ASN.1 schema the field holds. */
  var tag: Long,
  /**
   * If the constructed bit is set it indicates that the value is composed of other values that have
   * their own headers.
   *

      + heatmap.queryOptions.withInterval('1m')
      + options.calculation.xBuckets.withMode('size')
      + options.calculation.xBuckets.withValue('1min')
      + options.withCellGap(0)
      + options.color.withMode('scheme')
      + options.color.withScheme('Spectral')
      + options.color.withSteps(128)
      + options.yAxis.withDecimals(0)
      + options.yAxis.withUnit('s')
      + if std.length(desc) > 0 then

   *
   * This will be invoked for route selection regardless of whether the client
   * is configured with a single proxy, a proxy selector, or neither.
   *
   * @param url a URL with only the scheme, hostname, and port specified.
   */
  open fun proxySelectStart(
    call: Call,
    url: HttpUrl,
  ) {
  }

  /**
   * Invoked after proxy selection.
   *

package schema

import (
	"bytes"
	"context"
	"database/sql"
	"database/sql/driver"
	"encoding/gob"
	"encoding/json"
	"fmt"
	"reflect"
	"strings"
	"sync"
	"time"
)

var serializerMap = sync.Map{}

// RegisterSerializer register serializer
func RegisterSerializer(name string, serializer SerializerInterface) {
	serializerMap.Store(strings.ToLower(name), serializer)
}

// GetSerializer get serializer

                }
            }
        }

        formSchemeList.forEach(p -> {
            final FormScheme scheme = p.getFirst();
            final Credentials credentials = p.getSecond();
            scheme.authenticate(credentials, (request, consumer) -> {

                // request header
                for (final Header header : requestHeaderList) {

    open fun url(url: String): Builder {
      return url(canonicalUrl(url).toHttpUrl())
    }

    /**
     * Sets the URL target of this request.
     *
     * @throws IllegalArgumentException if the scheme of [url] is not `http` or `https`.
     */
    open fun url(url: URL) = url(url.toString().toHttpUrl())

    /**
     * Sets the header named [name] to [value]. If this request already has any headers