Asegúrate de crear un [entorno virtual](../virtual-environments.md){.internal-link target=_blank}, activarlo, y luego instalarlo, por ejemplo:

```console
$ pip install python-multipart
```

///

## Importar `Form`

Importar `Form` desde `fastapi`:

{* ../../docs_src/request_forms/tutorial001_an_py39.py hl[3] *}

## Definir parámetros de `Form`

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then install it, for example:

```console
$ pip install python-multipart
```

///

## Import `Form` { #import-form }

Import `Form` from `fastapi`:

{* ../../docs_src/request_forms/tutorial001_an_py39.py hl[3] *}

{* ../../docs_src/sub_applications/tutorial001.py hl[11, 19] *}

### Revisa la documentación automática de la API

Ahora, ejecuta el comando `fastapi` con tu archivo:

<div class="termy">

```console
$ fastapi dev main.py

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

junit-jupiter-params = { module = "org.junit.jupiter:junit-jupiter-params", version.ref = "org-junit-jupiter" }
#noinspection UnusedVersionCatalogEntry
junit-platform-console = { module = "org.junit.platform:junit-platform-console", version.ref = "junit-platform" }
#noinspection UnusedVersionCatalogEntry
junit-platform-launcher = { module = "org.junit.platform:junit-platform-launcher", version.ref = "junit-platform" }

Danach müssen Sie nur noch `pytest` installieren:

<div class="termy">

```console
$ pip install pytest

---> 100%
```

</div>

Es erkennt die Dateien und Tests automatisch, führt sie aus und berichtet Ihnen die Ergebnisse.

Führen Sie die Tests aus, mit:

<div class="termy">

```console
$ pytest

================ test session starts ================

它也被設計成可作為未來的參考，讓你隨時回來查看所需的內容。

## 運行程式碼

所有程式碼區塊都可以直接複製和使用（它們實際上是經過測試的 Python 檔案）。

要運行任何範例，請將程式碼複製到 `main.py` 檔案，並使用以下命令啟動 `fastapi dev`：

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:single">main.py</u>
<font color="#3465A4">INFO    </font> Using path <font color="#3465A4">main.py</font>

Далее Вам нужно установить `pytest`:

<div class="termy">

```console
$ pip install pytest

---> 100%
```

</div>

Он автоматически найдёт все файлы и тесты, выполнит их и предоставит Вам отчёт о результатах тестирования.

Запустите тесты командой `pytest` и увидите результат:

<div class="termy">

```console
$ pytest

================ test session starts ================

            }
            return null;
        }).when(tree).send(any(Request.class));

        DirFileEntryEnumIterator2 it = new DirFileEntryEnumIterator2(tree, parent, "*", null, 0);

        // Consume the only element
        assertTrue(it.hasNext());
        assertSame(fe1, it.next());
        // After exception path, iterator should be exhausted
        assertFalse(it.hasNext());

## Multiple Workers { #multiple-workers }

You can start multiple workers with the `--workers` command line option:

//// tab | `fastapi`

If you use the `fastapi` command:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> run --workers 4 <u style="text-decoration-style:solid">main.py</u>

  <span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting production server 🚀

		})

		// Initialize Console UI
		if globalBrowserEnabled {
			bootstrapTrace("initConsoleServer", func() {
				srv, err := initConsoleServer()
				if err != nil {
					logger.FatalIf(err, "Unable to initialize console service")
				}

				setConsoleSrv(srv)

				go func() {
					logger.FatalIf(newConsoleServerFn().Serve(), "Unable to initialize console server")
				}()
			})
		}