UpgradeResult result = orchestrator.executeStrategies(context, pomMap);

            // Create .mvn directory if needed to avoid root directory warnings
            // This is needed for both 4.0.0 and 4.1.0 to help Maven find the project root
            createMvnDirectoryIfNeeded(context);

            return result.errorPoms().isEmpty() ? 0 : 1;
        } catch (Exception e) {

		UIntField:         1,
		UInt8Field:        1,
		UInt16Field:       1,
		UInt32Field:       1,
		UInt64Field:       1,
		Float32Field:      1.1,
		Float64Field:      1.1,
		StringField:       "hello",
		TimeField:         currTime,
		TimePtrField:      &currTime,
		EmbeddedStruct:    EmbeddedStruct{EmbeddedIntField: 1, NestedEmbeddedStruct: NestedEmbeddedStruct{NestedEmbeddedIntField: 1, NestedEmbeddedIntFieldWithDefault: 2}},

pydantic==2.8.0
```

///

## 프로그램 실행

가상 환경을 활성화한 후에는 프로그램을 실행할 수 있습니다. 이때 해당 가상 환경에 설치된 Python과 패키지들이 사용됩니다.

<div class="termy">

```console
$ python main.py

Hello World
```

</div>

## 에디터 설정

에디터를 사용할 경우, 앞서 만든 가상 환경을 사용하도록 설정하는 것이 좋습니다. (대부분의 에디터는 자동으로 감지하기도 합니다.)
이렇게 하면 자동 완성 기능이나 코드 내 오류 표시 기능을 제대로 사용할 수 있습니다.

예시:

The whole **FastAPI** framework is based to satisfy that. Autocompletion works everywhere.

You will rarely need to come back to the docs.

Here's how your editor might help you:

* in <a href="https://code.visualstudio.com/" class="external-link" target="_blank">Visual Studio Code</a>:

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

There are many situations in which you need to notify an error to a client that is using your API.

This client could be a browser with a frontend, a code from someone else, an IoT device, etc.

You could need to tell the client that:

* The client doesn't have enough privileges for that operation.
* The client doesn't have access to that resource.
* The item the client was trying to access doesn't exist.
* etc.

    set "INTERNAL_MAVEN_OPTS=-agentpath:%YJPLIB%=onexit=snapshot,onexit=memory,tracing,onlylocal %INTERNAL_MAVEN_OPTS%"
) else if "%~1"=="--enc" (
    set "MAVEN_MAIN_CLASS=org.apache.maven.cling.MavenEncCling"
) else if "%~1"=="--shell" (
      set "MAVEN_MAIN_CLASS=org.apache.maven.cling.MavenShellCling"
) else if "%~1"=="--up" (
      set "MAVEN_MAIN_CLASS=org.apache.maven.cling.MavenUpCling"
)
exit /b 0

:processArgs

* Créez un fichier `main.py` avec :

```Python
from typing import Optional

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Optional[str] = None):
    return {"item_id": item_id, "q": q}
```

* Vous devriez maintenant avoir une structure de répertoire telle que :

### Allez voir le résultat

Ouvrez votre navigateur à l'adresse <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>.

Vous obtiendrez cette réponse JSON :

```JSON
{"message": "Hello World"}
```

### Documentation interactive de l'API

Rendez-vous sur <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

この時点ですでに、これらのアイデアを持った**FastAPI**が多くの人の役に立っていることは明らかです。

多くのユースケースに適しているため、既存の方法よりも選ばれています。

多くの開発者やチームが、すでに **FastAPI** にプロジェクトを依存しています (私と私のチームも含めて) 。

しかし、まだまだ多くの改善点や機能があります。

**FastAPI**には大きな未来が待っています。

Благодаря ✨ [**спонсорству FastAPI**](../help-fastapi.md#sponsor-the-author){.internal-link target=_blank} ✨ эти компании помогают обеспечивать, чтобы фреймворк и его **экосистема** оставались здоровыми и **устойчивыми**.