Nesse caso, significaria os atributos JSON e os tipos de dados que eles possuem, etc.

#### OpenAPI e JSON Schema { #openapi-and-json-schema }

OpenAPI define um *schema* de API para sua API. E esse *schema* inclui definições (ou "*schemas*") dos dados enviados e recebidos por sua API usando **JSON Schema**, o padrão para *schemas* de dados JSON.

En ese caso, significaría los atributos del JSON, los tipos de datos que tienen, etc.

#### OpenAPI y JSON Schema { #openapi-and-json-schema }

OpenAPI define un esquema de API para tu API. Y ese esquema incluye definiciones (o "esquemas") de los datos enviados y recibidos por tu API utilizando **JSON Schema**, el estándar para esquemas de datos JSON.

///

## О «полях формы» { #about-form-fields }

Обычно способ, которым HTML-формы (`<form></form>`) отправляют данные на сервер, использует «специальное» кодирование для этих данных, отличное от JSON.

**FastAPI** гарантирует, что эти данные будут прочитаны из нужного места, а не из JSON.

/// note | Технические детали

	w.WriteHeader(http.StatusBadRequest)
	json.NewEncoder(w).Encode(map[string]string{
		"error": fmt.Sprintf("%v", err),
	})
}

type Result struct {
	Result bool `json:"result"`
}

func mainHandler(w http.ResponseWriter, r *http.Request) {
	body, err := io.ReadAll(r.Body)
	if err != nil {
		writeErrorResponse(w, err)
		return
	}

	var out bytes.Buffer
	json.Indent(&out, body, "", "  ")

// with value as description of the keys.
type HelpKV struct {
	Key         string `json:"key"`
	Type        string `json:"type"`
	Description string `json:"description"`
	Optional    bool   `json:"optional"`

	// Indicates if the value contains sensitive info that shouldn't be exposed
	// in certain apis (such as Health Diagnostics/Callhome)
	Sensitive bool `json:"-"`

	// Indicates if the value is a secret such as a password that shouldn't be

	}
	return &zero
}

// JSON is a wrapper around a T object that can be serialized.
// There is an internal value
type JSON[T any] struct {
	p   *JSONPool[T]
	val *T
}

// NewJSON returns a new JSONPool.
// No initial value is set.
func (p *JSONPool[T]) NewJSON() *JSON[T] {
	var j JSON[T]
	j.p = p
	return &j
}

// NewJSONWith returns a new JSON with the provided value.

def test_items():
    response = client.get("/items/")
    assert response.status_code == 200, response.text
    assert response.json() == [{"name": "Katana"}]


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {
            "title": "ChimichangApp",

        "/items/123",
        json={
            "name": "Foo",
            "description": "A very nice Item",
            "price": 35.4,
            "tax": 3.2,
            "tags": ["foo", "bar", "foo"],
            "image": {"url": "http://example.com/image.png", "name": "example image"},
        },
    )
    assert response.status_code == 200, response.text
    assert response.json() == {
        "item_id": 123,

	return ARN{TargetID: tid, region: region}
}

// MarshalJSON - encodes to JSON data.
func (tid TargetID) MarshalJSON() ([]byte, error) {
	return json.Marshal(tid.String())
}

// UnmarshalJSON - decodes JSON data.
func (tid *TargetID) UnmarshalJSON(data []byte) error {
	var s string
	if err := json.Unmarshal(data, &s); err != nil {
		return err
	}

	targetID, err := parseTargetID(s)

@app.get("/a/{id}")
async def a(id):
    pass  # pragma: no cover


client = TestClient(app)


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/a/{id}": {
                "get": {