!!! tip
    You can <a href="https://help.github.com/en/github/collaborating-with-issues-and-pull-requests/commenting-on-a-pull-request" class="external-link" target="_blank">add comments with change suggestions</a> to existing pull requests.

# OAuth2 作用域

**FastAPI** 无缝集成 OAuth2 作用域（`Scopes`），可以直接使用。

作用域是更精密的权限系统，遵循 OAuth2 标准，与 OpenAPI 应用（和 API 自动文档）集成。

OAuth2 也是脸书、谷歌、GitHub、微软、推特等第三方身份验证应用使用的机制。这些身份验证应用在用户登录应用时使用 OAuth2 提供指定权限。

脸书、谷歌、GitHub、微软、推特就是 OAuth2 作用域登录。

本章介绍如何在 **FastAPI** 应用中使用 OAuth2 作用域管理验证与授权。

!!! warning "警告"

    本章内容较难，刚接触 FastAPI 的新手可以跳过。

    OAuth2 作用域不是必需的，没有它，您也可以处理身份验证与授权。

    但 OAuth2 作用域与 API（通过 OpenAPI）及 API 文档集成地更好。

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    FastAPI keretrendszer, nagy teljesítmény, könnyen tanulható, gyorsan kódolható, productionre kész
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   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
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## License

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            (options as JUnitPlatformOptions).excludeTags("org.gradle.test.fixtures.Flaky")
        }
        FlakyTestStrategy.ONLY -> {
            // Note there is an issue: https://github.com/spockframework/spock/issues/1288
            // JUnit Platform `includeTags` works before Spock engine, thus excludes all spock tests.

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    FastAPI 框架，高效能，易於學習，快速開發，適用於生產環境
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                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.