Для цього використайте стандартну підказку типу Python [`typing.Union`](https://docs.python.org/3/library/typing.html#typing.Union):

/// note | Примітка

Під час визначення [`Union`](https://docs.pydantic.dev/latest/concepts/types/#unions) спочатку вказуйте найконкретніший тип, а потім менш конкретний. У прикладі нижче більш конкретний `PlaneItem` стоїть перед `CarItem` у `Union[PlaneItem, CarItem]`.

///

</p>
<p align="center">
<a href="https://github.com/fastapi/fastapi/actions?query=workflow%3ATest+event%3Apush+branch%3Amaster">
    <img src="https://github.com/fastapi/fastapi/actions/workflows/test.yml/badge.svg?event=push&branch=master" alt="Test">
</a>
<a href="https://coverage-badge.samuelcolvin.workers.dev/redirect/fastapi/fastapi">

</p>
<p align="center">
<a href="https://github.com/fastapi/fastapi/actions?query=workflow%3ATest+event%3Apush+branch%3Amaster">
    <img src="https://github.com/fastapi/fastapi/actions/workflows/test.yml/badge.svg?event=push&branch=master" alt="Test">
</a>
<a href="https://coverage-badge.samuelcolvin.workers.dev/redirect/fastapi/fastapi">

</p>
<p align="center">
<a href="https://github.com/fastapi/fastapi/actions?query=workflow%3ATest+event%3Apush+branch%3Amaster">
    <img src="https://github.com/fastapi/fastapi/actions/workflows/test.yml/badge.svg?event=push&branch=master" alt="Test">
</a>
<a href="https://coverage-badge.samuelcolvin.workers.dev/redirect/fastapi/fastapi">

## Offizieller Leitfaden { #official-guide }

Pydantic hat einen offiziellen [Migrationsleitfaden](https://docs.pydantic.dev/latest/migration/) von v1 zu v2.

Er enthält auch, was sich geändert hat, wie Validierungen nun korrekter und strikter sind, mögliche Stolpersteine, usw.

Sie können ihn lesen, um besser zu verstehen, was sich geändert hat.

func (r *Reader) SetExpectedMax(expectedMax int64) {
	r.expectedMax = expectedMax
}

// AddChecksum will add checksum checks as specified in
// https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
// Returns ErrInvalidChecksum if a problem with the checksum is found.
func (r *Reader) AddChecksum(req *http.Request, ignoreValue bool) error {
	cs, err := GetContentChecksum(req.Header)

}

@test "Pip package generated license includes all dependencies' licenses" {
  do_external_licenses_check \
    "//tensorflow/tools/pip_package:wheel" \
    "//tensorflow/tools/pip_package:licenses"
}

# This test ensures that all the targets built into the Python package include
# their dependencies. It's a rewritten version of the "smoke test", an older

You can achieve that using [Pydantic's `AfterValidator`](https://docs.pydantic.dev/latest/concepts/validators/#field-after-validator) inside of `Annotated`.

/// tip

Pydantic also has [`BeforeValidator`](https://docs.pydantic.dev/latest/concepts/validators/#field-before-validator) and others. 🤓

///

# Guava: Google Core Libraries for Java

[![GitHub Release](https://img.shields.io/github/v/release/google/guava)](https://github.com/google/guava/releases/latest)
[![CI](https://github.com/google/guava/actions/workflows/ci.yml/badge.svg)](https://github.com/google/guava/actions/workflows/ci.yml)
[![OpenSSF Best Practices](https://www.bestpractices.dev/projects/7197/badge)](https://www.bestpractices.dev/projects/7197)

{* ../../docs_src/openapi_callbacks/tutorial001_py310.py hl[7:11,34:51] *}

/// tip | İpucu

`callback_url` query parametresi, Pydantic'in [Url](https://docs.pydantic.dev/latest/api/networks/) tipini kullanır.

///

Tek yeni şey, *path operation decorator*'ına argüman olarak verilen `callbacks=invoices_callback_router.routes`. Bunun ne olduğuna şimdi bakacağız.