<span style="background-color:#007166"><font color="#D3D7CF"> INFO </font></span>  Application startup complete.
```

</div>

It is **HIGHLY encouraged** that you write or copy the code, edit it and run it locally.

Using it in your editor is what really shows you the benefits of FastAPI, seeing how little code you have to write, all the type checks, autocompletion, etc.

---

## Install FastAPI { #install-fastapi }

ドキュメントに戻る必要はほとんどありません。

エディタがどのように役立つかの例です:

* [Visual Studio Code](https://code.visualstudio.com/) の場合:

![editor support](https://fastapi.tiangolo.com/img/vscode-completion.png)

* [PyCharm](https://www.jetbrains.com/pycharm/) の場合:

![editor support](https://fastapi.tiangolo.com/img/pycharm-completion.png)

以前は不可能だと思っていたコードでも補完が得られます。例えば、リクエストから届く（ネストされている可能性のある）JSON ボディ内の `price` キーなどです。

/test.out
/test/garbage/*.out
/test/pass.out
/test/run.out
/test/times.out

# This file includes artifacts of Go build that should not be checked in.
# For files created by specific development environment (e.g. editor),
# use alternative ways to exclude files from git.

These functions are there (instead of just using the classes directly) so that your editor doesn't mark errors about their types.

That way you can use your normal editor and coding tools without having to add custom configurations to disregard those errors.

```

If there is an existing translation and its Mermaid diagram is in sync with the Mermaid diagram in the English source, except a few translated words, then use the Mermaid diagram of the existing translation. The human editor of the translation translated these words in the Mermaid diagram. Keep these translations, do not revert them back to the English source.

Example:

Source (English):

```mermaid
flowchart LR

...from:

```Python
        ... "item_name": item.name ...
```

...to:

```Python
        ... "item_price": item.price ...
```

...and see how your editor will auto-complete the attributes and know their types:

![editor support](https://fastapi.tiangolo.com/img/vscode-completion.png)

你几乎不需要经常回来看文档。

在这里，你的编辑器可能会这样帮助你：

* 在 [Visual Studio Code](https://code.visualstudio.com/) 中:

![editor support](https://fastapi.tiangolo.com/img/vscode-completion.png)

* 在 [PyCharm](https://www.jetbrains.com/pycharm/) 中:

![editor support](https://fastapi.tiangolo.com/img/pycharm-completion.png)

你将能进行代码补全，这是在之前你可能曾认为不可能的事。例如，在来自请求 JSON 体（可能是嵌套的）中的键 `price`。

/// tip

Some editors check for unused function parameters, and show them as errors.

Using these `dependencies` in the *path operation decorator* you can make sure they are executed while avoiding editor/tooling errors.

```Python
        ... "item_name": item.name ...
```

... zu:

```Python
        ... "item_price": item.price ...
```

... und sehen Sie, wie Ihr Editor die Attribute automatisch vervollständigt und ihre Typen kennt:

![Editor Unterstützung](https://fastapi.tiangolo.com/img/vscode-completion.png)

# Debugging { #debugging }

You can connect the debugger in your editor, for example with Visual Studio Code or PyCharm.

## Call `uvicorn` { #call-uvicorn }

In your FastAPI application, import and run `uvicorn` directly:

{* ../../docs_src/debugging/tutorial001_py310.py hl[1,15] *}

### About `__name__ == "__main__"` { #about-name-main }