t.Fatalf("no error should happen when migrate scanner, valuer struct, got error %v", err)
	}

	data := ScannerValuerStruct{
		Name:     sql.NullString{String: "name", Valid: true},
		Gender:   &sql.NullString{String: "M", Valid: true},
		Age:      sql.NullInt64{Int64: 18, Valid: true},
		Male:     sql.NullBool{Bool: true, Valid: true},
		Height:   sql.NullFloat64{Float64: 1.8888, Valid: true},

  - svixhq
  - Alek99
  - codacy
  - zanfaruqui
  - scalar
  - bump-sh
  - andrew-propelauth
  - svix
  - zuplo-oss
  - zuplo
  - Kong
  - speakeasy-api
  - jess-render
  - blockbee-io
  - liblaber
  - render-sponsorships
  - renderinc
  - stainless-api
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  - coderabbitai
  - permitio
  - LambdaTest-Inc
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  - madisonredtfeldt
  - railwayapp
  - subtotal

     * Registers environment variables for rendering.
     *
     * @param data the render data to populate
     */
    protected void registerEnvItems(final RenderData data) {
        RenderDataUtil.register(data, "envItems", getEnvItems());
    }

    /**
     * Registers system properties for rendering.
     *
     * @param data the render data to populate
     */
    protected void registerPropItems(final RenderData data) {

    share a link to Colab/Jupyter/any notebook. placeholder: Tell us what you
    see! value: render: shell validations: required: true

-   type: textarea id: logs attributes: label: Relevant log output description:
    Please copy and paste any relevant log output. This will be automatically

Diğer bazı bulut sağlayıcılar da ✨ [**FastAPI'ye sponsor olur**](../help-fastapi.md#sponsor-the-author) ✨. 🙇

Kılavuzlarını takip etmek ve servislerini denemek için onları da değerlendirmek isteyebilirsiniz:

* [Render](https://docs.render.com/deploy-fastapi?utm_source=deploydoc&utm_medium=referral&utm_campaign=fastapi)

Некоторые другие облачные провайдеры ✨ [**спонсируют FastAPI**](../help-fastapi.md#sponsor-the-author) ✨ тоже. 🙇

Возможно, вы захотите попробовать их сервисы и воспользоваться их руководствами:

* [Render](https://docs.render.com/deploy-fastapi?utm_source=deploydoc&utm_medium=referral&utm_campaign=fastapi)

Some other cloud providers ✨ [**sponsor FastAPI**](../help-fastapi.md#sponsor-the-author) ✨ too. 🙇

You might also want to consider them to follow their guides and try their services:

* [Render](https://docs.render.com/deploy-fastapi?utm_source=deploydoc&utm_medium=referral&utm_campaign=fastapi)

Otros proveedores de nube ✨ [**son sponsors de FastAPI**](../help-fastapi.md#sponsor-the-author) ✨ también. 🙇

También podrías considerarlos para seguir sus guías y probar sus servicios:

* [Render](https://docs.render.com/deploy-fastapi?utm_source=deploydoc&utm_medium=referral&utm_campaign=fastapi)

Alguns outros provedores de nuvem ✨ [**patrocinam o FastAPI**](../help-fastapi.md#sponsor-the-author) ✨ também. 🙇

Você também pode considerá-los para seguir seus tutoriais e experimentar seus serviços:

* [Render](https://docs.render.com/deploy-fastapi?utm_source=deploydoc&utm_medium=referral&utm_campaign=fastapi)

# 헤더 매개변수 { #header-parameters }

헤더 매개변수를 `Query`, `Path` 그리고 `Cookie` 매개변수들과 같은 방식으로 정의할 수 있습니다.

## `Header` 임포트 { #import-header }

먼저 `Header`를 임포트합니다:

{* ../../docs_src/header_params/tutorial001_an_py310.py hl[3] *}

## `Header` 매개변수 선언 { #declare-header-parameters }

`Path`, `Query` 그리고 `Cookie`를 사용한 동일한 구조를 이용하여 헤더 매개변수를 선언합니다.

첫 번째 값은 기본값이며, 추가 검증이나 어노테이션 매개변수 모두 전달할 수 있습니다: