t.Fatalf("Failed to delete address, got error %v", err)
	}

	if len(person.Addresses) != 1 {
		t.Fatalf("Should have one address left")
	}

	if DB.Find(&[]PersonAddress{}, "person_id = ?", person.ID).RowsAffected != 1 {
		t.Fatalf("Should found one address")
	}

	var addresses2 []Address
	if err := DB.Model(&person).Association("Addresses").Find(&addresses2); err != nil || len(addresses2) != 1 {

```Python hl_lines="7-11"
{!../../docs_src/body/tutorial001.py!}
```

Также как и при описании параметров запроса, когда атрибут модели имеет значение по умолчанию, он является необязательным. Иначе он обязателен. Используйте `None`, чтобы сделать его необязательным без использования конкретных значений по умолчанию.

Например, модель выше описывает вот такой JSON "объект" (или словарь Python):

```JSON
{
    "name": "Foo",

from fastapi import FastAPI
from fastapi.testclient import TestClient

app = FastAPI(swagger_ui_oauth2_redirect_url=None)


@app.get("/items/")
async def read_items():
    return {"id": "foo"}


client = TestClient(app)


def test_swagger_ui():
    response = client.get("/docs")
    assert response.status_code == 200, response.text
    assert response.headers["content-type"] == "text/html; charset=utf-8"

SOURCE="${BASH_SOURCE[0]}"
while [ -h "$SOURCE" ]; do
	DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
	SOURCE="$(readlink "$SOURCE")"
	[[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE"
done
DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"

# Increase the V8 stack size from the default of 984K
# to 8192K to ensure all tests can pass without hitting
# stack size limits.

  optional int32 value = 2;

  // globalDefault specifies whether this PriorityClass should be considered as
  // the default priority for pods that do not have any priority class.
  // Only one PriorityClass can be marked as `globalDefault`. However, if more than
  // one PriorityClasses exists with their `globalDefault` field set to true,
  // the smallest value of such global default PriorityClasses will be used as the default priority.
  // +optional

        {
            "detail": [
                {
                    "type": "missing",
                    "loc": ["body", "files"],
                    "msg": "Field required",
                    "input": None,
                }
            ]
        }
    ) | IsDict(
        # TODO: remove when deprecating Pydantic v1
        {
            "detail": [
                {
                    "loc": ["body", "files"],

			return err
		}
	}
	fmt.Fprintln(c.Stdout, string(out))
	return nil
}

func waypointName(wl *ZtunnelWorkload, services []*ZtunnelService) string {
	if wl.Waypoint == nil {
		return "None"
	}

	for _, svc := range services {
		if fmt.Sprintf("%s/%s", svc.Namespace, svc.Hostname) == wl.Waypoint.Destination {
			return svc.Name
		}
		for _, addr := range svc.Addresses {

      contents: read
      pull-requests: write
    runs-on: ubuntu-latest
    steps:
    - uses: actions/labeler@v5
      if: ${{ github.event.action != 'labeled' && github.event.action != 'unlabeled' }}
    - run: echo "Done adding labels"
  # Run this after labeler applied labels
  check-labels:
    needs:
      - labeler
    permissions:
      pull-requests: read
    runs-on: ubuntu-latest
    steps:

"""Merge all JUnit test.xml files in one directory into one.

Usage: squash_testlogs.py START_DIRECTORY OUTPUT_FILE

Example: squash_testlogs.py /tf/pkg/testlogs /tf/pkg/merged.xml

Recursively find all the JUnit test.xml files in one directory, and merge any
of them that contain failures into one file. The TensorFlow DevInfra team

     *
     * - If the stack overflowed after set()/setValue() stored its result, then a call to
     * setException() will be a no-op because the Future is already done.
     *
     * Both scenarios are bad: The output Future might never complete, or, if it does complete, it
     * might not run some of its listeners. The likely result is that the app will hang. (And of