///

**FastAPI** целиком основан на Pydantic.

Вы увидите намного больше всего этого на практике в [Учебник - Руководство пользователя](tutorial/index.md).

## Подсказки типов с аннотациями метаданных { #type-hints-with-metadata-annotations }

В Python также есть возможность добавлять **дополнительные <dfn title="Данные о данных, в данном случае — информация о типе, например описание.">метаданные</dfn>** к подсказкам типов с помощью `Annotated`.

---

FastAPI is a modern, fast (high-performance), web framework for building APIs with Python based on standard Python type hints.

## `fastapi-slim`

⚠️ Do not install this package. ⚠️

This package, `fastapi-slim`, does nothing other than depend on `fastapi`.

All the functionality has been integrated into `fastapi`.

        .Builder()
        .add("foo: bar")
        .add(" foo: baz") // Name leading whitespace is trimmed.
        .add("foo : bak") // Name trailing whitespace is trimmed.
        .add("\tkey\t:\tvalue\t") // '\t' also counts as whitespace
        .add("ping:  pong  ") // Value whitespace is trimmed.
        .add("kit:kat") // Space after colon is not required.
        .build()

import okhttp3.EventListener;
import okhttp3.Handshake;
import okhttp3.HttpUrl;
import okhttp3.OkHttpClient;
import okhttp3.Protocol;
import okhttp3.Request;
import okhttp3.Response;

/**
 * This prints events for a single in-flight call. It won't work for multiple concurrent calls
 * because we don't know what callStartNanos refers to.
 */
public final class PrintEventsNonConcurrent {

# Sous-applications - Montage { #sub-applications-mounts }

Si vous avez besoin de deux applications FastAPI indépendantes, avec leur propre OpenAPI et leurs propres interfaces de la documentation, vous pouvez avoir une application principale et « monter » une (ou plusieurs) sous‑application(s).

## Monter une application **FastAPI** { #mounting-a-fastapi-application }

- the docs: les documents
- the documentation: la documentation

- Exclude from OpenAPI: Exclusion d'OpenAPI

- framework: framework (do not translate to cadre)
- performance: performance

- type hints: annotations de type
- type annotations: annotations de type

- autocomplete: autocomplétion
- autocompletion: autocomplétion

- the request (what the client sends to the server): la requête

            assertEquals(0, context.getSalt().length);
        }

        @ParameterizedTest
        @ValueSource(ints = { 0, 1, 3, 5, 10 })
        @DisplayName("Should calculate size correctly for different hash algo counts")
        void testSizeCalculation(int hashAlgoCount) {
            // Arrange
            int[] hashAlgos = new int[hashAlgoCount];

* Hooks (Before/After Create/Save/Update/Delete/Find)
* Eager loading with `Preload`, `Joins`
* Transactions, Nested Transactions, Save Point, RollbackTo to Saved Point
* Context, Prepared Statement Mode, DryRun Mode
* Batch Insert, FindInBatches, Find To Map
* SQL Builder, Upsert, Locking, Optimizer/Index/Comment Hints, NamedArg, Search/Update/Create with SQL Expr
* Composite Primary Key
* Auto Migrations
* Logger

/**
 * A fault-tolerant wrapper for CrawlerClient that implements retry logic for failed requests.
 * This client will attempt to execute requests multiple times before giving up, with configurable
 * retry counts and intervals between attempts.
 *
 * <p>The client supports a RequestListener interface to monitor the request lifecycle and handle
 * exceptions during retries.</p>
 *
 * <p>Key features:</p>
 * <ul>

		msg, tagString, strings.Join(trace, "\n"))

	fmt.Fprintln(c.output, output)
	return nil
}

// New initializes a new logger target
// which prints log directly in the standard
// output.
func New(w io.Writer) *Target {
	return &Target{output: w}