Se você estiver construindo uma aplicação <abbr title="Command Line Interface – Interface de Linha de Comando">CLI</abbr> para ser utilizada em um terminal ao invés de uma aplicação web, dê uma olhada no <a href="https://typer.tiangolo.com/" class="external-link" target="_blank">**Typer**</a>.

**Typer** é o irmão menor do FastAPI. E seu propósito é ser o **FastAPI das _CLIs_**. ⌨️ 🚀

Na verdade, todos (ou a maioria) dos frameworks web funcionam da mesma forma.

Você nunca chama essas funções diretamente. Elas são chamadas pelo framework utilizado (nesse caso, **FastAPI**).

### フルスタック FastAPI PostgreSQL - 機能

* 完全な**Docker**インテグレーション (Dockerベース)。
* Docker Swarm モードデプロイ。
* ローカル開発環境向けの**Docker Compose**インテグレーションと最適化。
* UvicornとGunicornを使用した**リリース可能な** Python web サーバ。
* Python <a href="https://github.com/fastapi/fastapi" class="external-link" target="_blank">**FastAPI**</a> バックエンド:
    * **高速**: **NodeJS** や **Go** 並みのとても高いパフォーマンス (Starlette と Pydantic のおかげ)。

...
```

#### OpenAPI 的用途

驱动 FastAPI 内置的 2 个交互式文档系统的正是 OpenAPI 模式。

并且还有数十种替代方案，它们全部都基于 OpenAPI。你可以轻松地将这些替代方案中的任何一种添加到使用 **FastAPI** 构建的应用程序中。

你还可以使用它自动生成与你的 API 进行通信的客户端代码。例如 web 前端，移动端或物联网嵌入程序。

## 分步概括

### 步骤 1：导入 `FastAPI`

{* ../../docs_src/first_steps/tutorial001.py hl[1] *}

`FastAPI` 是一个为你的 API 提供了所有功能的 Python 类。

/// note | 技术细节

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   * sensitive information.
   */
  private fun toLoggableString(): String =
    (
      (if (isCanceled()) "canceled " else "") +
        (if (forWebSocket) "web socket" else "call") +
        " to " + redactedUrl()
    )

  internal fun redactedUrl(): String = originalRequest.url.redact()

  inner class AsyncCall(
    private val responseCallback: Callback,

import okhttp3.internal.http2.Settings
import okhttp3.internal.http2.StreamResetException
import okhttp3.internal.isHealthy
import okhttp3.internal.tls.OkHostnameVerifier
import okio.Buffer

/**
 * A connection to a remote web server capable of carrying 1 or more concurrent streams.
 *
 * Connections are shared in a connection pool. Accesses to the connection's state must be guarded
 * by holding a lock on the connection.
 */

      .isGreaterThan(message.length.toLong()) // Not compressed.
    assertThat(client.processNextFrame()).isTrue()
    client.listener.assertTextMessage(message)
  }

  /** One peer's streams, listener, and web socket in the test.  */
  private class TestStreams(
    private val taskFaker: TaskFaker,
    private val delegate: Socket,
    private val client: Boolean,
  ) : BufferedSocket {

  }

  /**
   * Invoked immediately after receiving a response body and completing reading it.
   *
   * Will only be invoked for requests having a response body e.g. won't be invoked for a web socket
   * upgrade.
   *
   * If the response body is closed before the response body is exhausted, this is invoked at the
   * time it is closed. In such calls [byteCount] is the number of bytes returned to the

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