执行顺序大致如下时序图所示。时间轴从上到下，每一列都代表交互或者代码执行的一部分。

```mermaid
sequenceDiagram

participant client as Client
participant handler as Exception handler
participant dep as Dep with yield
participant operation as Path Operation
participant tasks as Background tasks

    Note over client,operation: Can raise exceptions, including HTTPException
    client ->> dep: Start request
    Note over dep: Run code up to yield

# Concurrence et les mots-clés async et await

Cette page vise à fournir des détails sur la syntaxe `async def` pour les *fonctions de chemins* et quelques rappels sur le code asynchrone, la concurrence et le parallélisme.

## Vous êtes pressés ?

<abbr title="'too long; didn't read' en anglais, ou 'trop long ; j'ai pas lu'"><strong>TL;DR :</strong></abbr>

Si vous utilisez des bibliothèques tierces qui nécessitent d'être appelées avec `await`, telles que :

- Ingress:
  - `spec.ingressClassName` replaces the deprecated `kubernetes.io/ingress.class` annotation, and allows associating an Ingress object with a particular controller.

{* ../../docs_src/dependencies/tutorial001_an_py310.py hl[8:9] *}

이게 다입니다.

**단 두 줄입니다**.

그리고, 이 함수는 여러분의 모든 *경로 작동 함수*가 가지고 있는 것과 같은 형태와 구조를 가지고 있습니다.

여러분은 이를 "데코레이터"가 없는 (`@app.get("/some-path")`가 없는) *경로 작동 함수*라고 생각할 수 있습니다.

그리고 여러분이 원하는 무엇이든 반환할 수 있습니다.

이 경우, 이 의존성은 다음과 같은 경우를 기대합니다:

* 선택적인 쿼리 매개변수 `q`, `str`을 자료형으로 가집니다.
* 선택적인 쿼리 매개변수 `skip`, `int`를 자료형으로 가지며 기본 값은 `0`입니다.

# 特性

## FastAPI 特性

**FastAPI** 提供了以下内容：

### 建立在開放標準的基礎上

* 使用 <a href="https://github.com/OAI/OpenAPI-Specification" class="external-link" target="_blank"><strong>OpenAPI</strong></a> 來建立 API，包含<abbr title="path，也被叫做: endpoints, routes">路徑</abbr><abbr title="也叫做 HTTP 方法，例如 POST, GET, PUT, DELETE">操作</abbr>、參數、請求內文、安全性等聲明。

     * The results are ordered by creation time in descending order and the pager is updated with
     * pagination metadata including total count and page number list.
     *
     * @param crawlingInfoPager the pager object containing search criteria and pagination settings
     * @return a list of CrawlingInfo entities matching the criteria
     */

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package target

import (
	"bytes"
	"context"
	"encoding/base64"
	"encoding/json"
	"fmt"
	"net/http"
	"net/url"
	"os"
	"path/filepath"
	"strconv"
	"strings"
	"time"

	elasticsearch7 "github.com/elastic/go-elasticsearch/v7"
	"github.com/minio/highwayhash"
	"github.com/minio/minio/internal/event"

      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

   Copyright [yyyy] [name of copyright owner]

   Licensed under the Apache License, Version 2.0 (the "License");

            classPath,
            classPathDependencies,
        )
    )


private
typealias ApiTypeSupplier = () -> ApiType


/**
 * Provides [ApiType] instances by Kotlin source name from a class path.
 *
 * Keeps JAR files open for fast lookup, must be closed.
 * Once closed, type graph navigation from [ApiType] and [ApiFunction] instances
 * will throw [IllegalStateException].
 *
 * Limitations:

     * @param promisedStreamId server-initiated stream ID.  Must be an even number.
     * @param requestHeaders minimally includes `:method`, `:scheme`, `:authority`, and `:path`.
     */
    @Throws(IOException::class)
    fun pushPromise(
      streamId: Int,
      promisedStreamId: Int,
      requestHeaders: List<Header>,
    )

    /**