### Declarando `Settings` apenas uma vez com `lru_cache`

Ler o conteúdo de um arquivo em disco normalmente é uma operação custosa (lenta), então você provavelmente quer fazer isso apenas um vez e reutilizar o mesmo objeto settings depois, em vez de ler os valores a cada requisição.

Mas cada vez que fazemos:

```Python

    assert response.json() == expected_response


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

@needs_py310
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": {
            "/portal": {
                "get": {

@needs_py39
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": {
            "/users/me": {
                "get": {

    assert response.json() == {"q": ["baz", "foobar"]}


@needs_py39
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/": {
                "get": {

/// note | "備考"

わからない場合は、ドキュメントの[Async: *"In a hurry?"*](../../async.md){.internal-link target=_blank}の中の`async`と`await`についてのセクションを確認してください。

///

## OpenAPIとの統合

依存関係（およびサブ依存関係）のすべてのリクエスト宣言、検証、および要件は、同じOpenAPIスキーマに統合されます。

つまり、対話型ドキュメントにはこれらの依存関係から得られる全ての情報も含まれているということです:

<img src="https://fastapi.tiangolo.com/img/tutorial/dependencies/image01.png">

## 簡単な使い方

 * the file before writing.
 *
 * @author Colin Decker
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public enum FileWriteMode {
  /** Specifies that writes to the opened file should append to the end of the file. */
  APPEND

name: Check issues metadata

on:
  issues:
    types: [ opened, unlabeled, closed ]

permissions: {}

jobs:
  check_issue_metadata:
    permissions:
      issues: write
    runs-on: ubuntu-latest
    steps:
      # Check that issues have proper metadata: labels and milestone
      # https://github.com/gradle/issue-management-action/blob/main/src/issue-metadata.ts

    assert response.status_code == 204
    assert not response.content


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": {
            "/http-no-body-statuscode-exception": {
                "get": {

    assert response.status_code == 200, response.text
    assert response.json() == {}


def test_openapi():
    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": {
            "/": {
                "get": {