//// tab | Python 3.10+

```Python hl_lines="1"
{!> ../../docs_src/python_types/tutorial009_py310.py!}
```

////

Using `str | None` instead of just `str` will let the editor help you detect errors where you could be assuming that a value is always a `str`, when it could actually be `None` too.

### Classes as types { #classes-as-types }

You can also declare a class as the type of a variable.

                String url = urlElement.textContent().trim();
                if (url.contains("${")) {
                    // Allow repository URL interpolation; do not disable.
                    // Keep a gentle warning to help users notice unresolved placeholders at build time.
                    String repositoryId = repository.childText("id");

 *
 * <p>Subscribers should not, in general, throw. If they do, the EventBus will catch and log the
 * exception. This is rarely the right solution for error handling and should not be relied upon; it
 * is intended solely to help find problems during development.
 *
 * <p>The EventBus guarantees that it will not call a subscriber method from multiple threads
 * simultaneously, unless the method explicitly allows it by bearing the {@link

      return ImmutableList.this.subList(fromIndex + offset, toIndex + offset);
    }

    @Override
    boolean isPartialView() {
      return true;
    }

    // redeclare to help optimizers with b/310253115
    @SuppressWarnings("RedundantOverride")
    @Override
    @J2ktIncompatible
    @GwtIncompatible
        Object writeReplace() {
      return super.writeReplace();
    }
  }

   /___/ .__/\_,_/_/ /_/\_\   version 2.1.0.2.6.0.0-598
      /_/

Using Scala version 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112)
Type in expressions to have them evaluated.
Type :help for more information.

scala>
```

- At the _scala>_ prompt, submit the job by typing the following commands, Replace node names, file name, and file location with your values:

```

But once you know the basic information of **HTTPS for developers** you can easily combine and configure different tools to help you manage everything in a simple way.

* Upgraded and relaxed dependencies for package extras `all` (including new Uvicorn version), when you install `"fastapi[all]"`.
* New docs about how to [**Help Maintain FastAPI**](https://fastapi.tiangolo.com/help-fastapi/#help-maintain-fastapi).

### Features

    return newReentrantLock(lockName, false);
  }

  /**
   * Creates a {@link ReentrantLock} with the given fairness policy. The {@code lockName} is used in
   * the warning or exception output to help identify the locks involved in the detected deadlock.
   */
  public ReentrantLock newReentrantLock(String lockName, boolean fair) {
    return policy == Policies.DISABLED
        ? new ReentrantLock(fair)

    //                                                                              ======
    /**
     * Sets up HTML data for rendering, including help link.
     *
     * @param runtime the action runtime
     */
    @Override
    protected void setupHtmlData(final ActionRuntime runtime) {
        super.setupHtmlData(runtime);

///

## FastAPI スポンサーによる SDK ジェネレータ { #sdk-generators-from-fastapi-sponsors }

このセクションでは、FastAPI をスポンサーしている企業による、**ベンチャー支援**および**企業支援**のソリューションを紹介します。これらの製品は、高品質な生成 SDK に加えて、**追加機能**や**統合**を提供します。

✨ [**FastAPI をスポンサーする**](../help-fastapi.md#sponsor-the-author) ✨ ことで、これらの企業はフレームワークとその**エコシステム**の健全性と**持続可能性**を支援しています。

この支援は、FastAPI の**コミュニティ**（皆さん）への強いコミットメントの表明でもあり、**優れたサービス**の提供だけでなく、堅牢で発展するフレームワーク FastAPI を支える姿勢を示しています。🙇

例えば、次のようなものがあります: