Eles serão convertidos para seus valores correspondentes (strings neste caso) antes de serem retornados ao cliente:

{* ../../docs_src/path_params/tutorial005_py39.py hl[18,21,23] *}

No seu cliente, você receberá uma resposta JSON como:

```JSON
{
  "model_name": "alexnet",
  "message": "Deep Learning FTW!"
}

    assert len(response.content)
    os.remove("./image.png")


def test_openapi_schema(client: TestClient):
    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": {
            "/items/{item_id}": {
                "get": {

}

const (
	allPoliciesFile           = "policies.json"
	allUsersFile              = "users.json"
	allGroupsFile             = "groups.json"
	allSvcAcctsFile           = "svcaccts.json"
	userPolicyMappingsFile    = "user_mappings.json"
	groupPolicyMappingsFile   = "group_mappings.json"
	stsUserPolicyMappingsFile = "stsuser_mappings.json"

	iamAssetsDir = "iam-assets"
)

    @TaskAction
    fun execute() {
        val gson: Gson = GsonBuilder().setFormattingStyle(FormattingStyle.PRETTY.withIndent("    ")).create()
        loadChanges().mapValues {
            gson.toJson(AcceptedApiChanges(sortChanges(it.value)))
        }.forEach {
            it.key.bufferedWriter().use { out ->
                out.write(it.value)
                out.write("\n")
            }
        }
    }

    assert "content-length" not in response.headers
    assert response.content == b""


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": {
                "get": {

def test_return_defaults():
    response = client.get("/")
    assert response.json() == {"sub": {}}


def test_return_exclude_unset():
    response = client.get("/exclude_unset")
    assert response.json() == {"x": None, "y": "y"}


def test_return_exclude_defaults():
    response = client.get("/exclude_defaults")
    assert response.json() == {}


def test_return_exclude_none():

Например, модель выше описывает такой JSON "объект" (или Python `dict`):

```JSON
{
    "name": "Foo",
    "description": "An optional description",
    "price": 45.2,
    "tax": 3.5
}
```

...так как `description` и `tax` являются необязательными (со значением по умолчанию `None`), такой JSON "объект" тоже будет корректным:

```JSON
{
    "name": "Foo",
    "price": 45.2
}
```

    )
    assert response.status_code == 200, response.text
    assert response.json() == ["first", "second", "third"]


def test_python_set_param_as_form():
    response = client.post(
        "/form/python-set", data={"items": ["first", "second", "third"]}
    )
    assert response.status_code == 200, response.text
    assert set(response.json()) == {"first", "second", "third"}


def test_python_tuple_param_as_form():

    assert response.text == expected_content


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

Der Weg, wie HTML-Formulare (`<form></form>`) die Daten zum Server senden, verwendet normalerweise eine „spezielle“ Kodierung für diese Daten. Diese unterscheidet sich von JSON.

**FastAPI** stellt sicher, dass diese Daten korrekt ausgelesen werden, statt JSON zu erwarten.

/// note | Technische Details