예 ) `pip install python-multipart`.

///

## `File` 및 `Form` 업로드

{* ../../docs_src/request_forms_and_files/tutorial001.py hl[1] *}

## `File` 및 `Form` 매개변수 정의

`Body` 및 `Query`와 동일한 방식으로 파일과 폼의 매개변수를 생성합니다:

{* ../../docs_src/request_forms_and_files/tutorial001.py hl[8] *}

파일과 폼 필드는 폼 데이터 형식으로 업로드되어 파일과 폼 필드로 전달됩니다.

어떤 파일들은 `bytes`로, 또 어떤 파일들은 `UploadFile`로 선언할 수 있습니다.

func (where Where) Build(builder Builder) {
	if len(where.Exprs) == 1 {
		if andCondition, ok := where.Exprs[0].(AndConditions); ok {
			where.Exprs = andCondition.Exprs
		}
	}

	// Switch position if the first query expression is a single Or condition
	for idx, expr := range where.Exprs {
		if v, ok := expr.(OrConditions); !ok || len(v.Exprs) > 1 {
			if idx != 0 {
				where.Exprs[0], where.Exprs[idx] = where.Exprs[idx], where.Exprs[0]

					</div>
					<fieldset>
						<legend><la:message key="labels.search" /></legend>
						<div class="clearfix">
							<div class="mx-auto col-10 col-sm-8 col-md-8 col-lg-6">
								<la:text styleClass="query form-control"
									property="q" size="50" maxlength="1000" styleId="contentQuery"
									autocomplete="off" />
							</div>
						</div>
						<c:if test="${!empty popularWords}">
							<div class="clearfix">

`File` es una clase que hereda directamente de `Form`.

Pero recuerda que cuando importas `Query`, `Path`, `File` y otros desde `fastapi`, esos son en realidad funciones que devuelven clases especiales.

///

/// tip | Consejo

Para declarar cuerpos de File, necesitas usar `File`, porque de otra manera los parámetros serían interpretados como parámetros query o parámetros de cuerpo (JSON).

///

Los archivos se subirán como "form data".

						class="align-items-center" />
				</la:link>
				<div
					class="d-flex col-md-6 col-sm-8 col-7 me-auto p-0"
					role="search">
					<div class="input-group">
						<la:text property="q" maxlength="1000" styleId="query"
							styleClass="form-control" autocomplete="off" />
						<button type="submit" name="search" id="searchButton"
							class="btn btn-primary">
							<em class="fa fa-search">
						</button>

						class="align-items-center" />
				</la:link>
				<div
					class="d-flex col-md-6 col-sm-8 col-7 me-auto p-0"
					role="search">
					<div class="input-group">
						<la:text property="q" maxlength="1000" styleId="query"
							styleClass="form-control" autocomplete="off" />
						<button type="submit" name="search" id="searchButton"
							class="btn btn-primary">
							<em class="fa fa-search">
						</button>

        )

    Component.PATH ->
      UrlComponentEncodingTesterJvmPlatform()
        .escapeForUri(
          '%'.code,
          '['.code,
          ']'.code,
        )

    Component.QUERY ->
      UrlComponentEncodingTesterJvmPlatform()
        .escapeForUri(
          '%'.code,
          '\\'.code,
          '^'.code,
          '`'.code,
          '{'.code,
          '|'.code,

/// note | Nota

Esto es compatible desde la versión `0.115.0` de FastAPI. 🤓

///

/// tip | Consejo

Esta misma técnica se aplica a `Query`, `Cookie`, y `Header`. 😎

///

## Cookies con un Modelo de Pydantic

Declara los parámetros de **cookie** que necesites en un **modelo de Pydantic**, y luego declara el parámetro como `Cookie`:

/**
 * Service for detecting and providing information about the operating system (OS)
 * on which the application is running.
 * <p>
 * This service provides a platform-independent way to:
 * <ul>
 * <li>Query basic OS information like name, architecture, and version</li>
 * <li>Determine the OS family (e.g., Windows, Unix, Mac)</li>
 * <li>Check if the current OS is Windows-based</li>
 * </ul>
 * <p>

Независимые тесты производительности приложений от TechEmpower показывают, что **FastAPI** под управлением Uvicorn <a href="https://www.techempower.com/benchmarks/#section=test&runid=7464e520-0dc2-473d-bd34-dbdfd7e85911&hw=ph&test=query&l=zijzen-7" class="external-link" target="_blank">один из самых быстрых Python-фреймворков</a> и уступает только Starlette и Uvicorn (которые используются в FastAPI). (*)