```

////


/// info

想进一步了解 <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic，请阅读其文档</a>.

///

整个 **FastAPI** 建立在 Pydantic 的基础之上。

实际上你将在 [教程 - 用户指南](tutorial/index.md){.internal-link target=_blank} 看到很多这种情况。

## **FastAPI** 中的类型提示

**FastAPI** 利用这些类型提示来做下面几件事。

使用 **FastAPI** 时用类型提示声明参数可以获得：

* **编辑器支持**。

{* ../../docs_src/security/tutorial001_an_py39.py *}

## Execute-o { #run-it }

/// info | Informação

O pacote <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a> é instalado automaticamente com o **FastAPI** quando você executa o comando `pip install "fastapi[standard]"`.

    * `Path()`
    * `Query()`
    * `Header()`
    * `Cookie()`

Sin embargo, si usas el comando `pip install fastapi`, el paquete `python-multipart` no se incluye por defecto.

Para instalarlo manualmente, asegúrate de crear un [entorno virtual](../../virtual-environments.md){.internal-link target=_blank}, activarlo, y luego instalarlo con:

Docker Hubは 多くのツールや環境、データベース、アプリケーションに対応している予め作成された**公式のコンテナ・イメージ**をパブリックに提供しています。

例えば、公式イメージの1つに<a href="https://hub.docker.com/_/python" class="external-link" target="_blank">Python Image</a>があります。

その他にも、データベースなどさまざまなイメージがあります：

* <a href="https://hub.docker.com/_/postgres" class="external-link" target="_blank">PostgreSQL</a>

     */
    CredentialsInternal clone();

    /**
     * Create an SSP context for authentication.
     * @param tc the CIFS context
     * @param targetDomain the target domain for authentication
     * @param host the target host
     * @param initialToken initial authentication token, if any
     * @param doSigning whether message signing should be enabled
     * @return a new SSP authentication context

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * The presence of this annotation on a type indicates that the type may be used with <a
 * href="https://www.gwtproject.org/">GWT</a> or <a href="https://github.com/google/j2cl">J2CL</a>.
 *

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * The presence of this annotation on an API indicates that the method may not be used with
 * the <a href="http://www.gwtproject.org/">Google Web Toolkit</a> (GWT).
 *

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Outer class that exists solely to let us write {@code Partially.GwtIncompatible} instead of plain
 * {@code GwtIncompatible}. This is more accurate for {@link Futures#catching}, which is available

That's why the current versions are still `0.x.x`, this reflects that each version could potentially have breaking changes. This follows the <a href="https://semver.org/" class="external-link" target="_blank">Semantic Versioning</a> conventions.