}
	if err := dec.Err(); err != nil {
		return nil, err
	}
	return result, nil
}

func TestJsonpathEval(t *testing.T) {
	f, err := os.Open(filepath.Join("jsondata", "books.json"))
	if err != nil {
		t.Fatal(err)
	}

	b, err := io.ReadAll(f)
	if err != nil {
		t.Fatal(err)
	}

	p := participle.MustBuild(
		&JSONPath{},
		participle.Lexer(sqlLexer),

    return items[item_id]


def test_read_items():
    with TestClient(app) as client:
        response = client.get("/items/foo")
        assert response.status_code == 200

app.include_router(router, prefix="/{segment}")


client = TestClient(app)


def test_get():
    response = client.get("/seg/users/foo")
    assert response.status_code == 200, response.text

Wenn Sie in Ihrem Browser eine URL wie:

```
http://127.0.0.1:8000/items/foo-item
```

... öffnen, ohne den benötigten Parameter `needy`, dann erhalten Sie einen Fehler wie den folgenden:

```JSON
{
  "detail": [
    {
      "type": "missing",
      "loc": [
        "query",
        "needy"
      ],
      "msg": "Field required",
      "input": null,

    return Settings(admin_email="******@****.***")


app.dependency_overrides[get_settings] = get_settings_override


def test_app():
    response = client.get("/info")
    data = response.json()
    assert data == {
        "app_name": "Awesome API",
        "admin_email": "******@****.***",
        "items_per_user": 50,

    return Settings(admin_email="******@****.***")


app.dependency_overrides[get_settings] = get_settings_override


def test_app():
    response = client.get("/info")
    data = response.json()
    assert data == {
        "app_name": "Awesome API",
        "admin_email": "******@****.***",
        "items_per_user": 50,

```Python hl_lines="9-14  17"
{!../../docs_src/custom_response/tutorial009c.py!}
```

🔜 ↩️ 🛬:

```json
{"message": "Hello World"}
```

...👉 📨 🔜 📨:

```json
{
  "message": "Hello World"
}
```

↗️, 👆 🔜 🎲 🔎 🌅 👍 🌌 ✊ 📈 👉 🌘 ❕ 🎻. 👶

## 🔢 📨 🎓

```txt
Hello, World from Flask!
```

&amp; 🚥 👆 🚶 <a href="http://localhost:8000/v2" class="external-link" target="_blank">http://localhost:8000/v2</a> 👆 🔜 👀 📨 ⚪️➡️ FastAPI:

```JSON
{
    "message": "Hello World"
}

# This script must be executed from the branch associated with the PR to issue the command on.
#

PR_NUMBER=$(hub pr show -f '%I')

    from docs_src.settings.tutorial001 import app

    client = TestClient(app)
    response = client.get("/info")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "app_name": "Awesome API",
        "admin_email": "******@****.***",
        "items_per_user": 50,