{* ../../docs_src/first_steps/tutorial001.py *}

Copiez ce code dans un fichier nommé `main.py`.

Démarrez le serveur :

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
<span style="color: green;">INFO</span>:     Started reloader process [28720]

	if objAPI == nil {
		return np, grid.NewRemoteErr(errServerNotInitialized)
	}

	go func() {
		err := globalTierConfigMgr.Reload(context.Background(), newObjectLayerFn())
		if err != nil {
			peersLogIf(context.Background(), fmt.Errorf("Failed to reload remote tier config %s", err))
		}
	}()

	return
}

// ConsoleLogHandler sends console logs of this node back to peer rest client

Running on 0.0.0.0:8080 over http (CTRL + C to quit)
```

</div>

////

/// warning | Achtung

Denken Sie daran, die Option `--reload` zu entfernen, wenn Sie diese verwendet haben.

Die Option `--reload` verbraucht viel mehr Ressourcen, ist instabiler, usw.

Sie hilft sehr während der **Entwicklung**, aber Sie sollten sie **nicht** in der **Produktion** verwenden.

///

  }

  /**
   * Returns a {@code CacheLoader} which wraps {@code loader}, executing calls to {@link
   * CacheLoader#reload} using {@code executor}.
   *
   * <p>This method is useful only when {@code loader.reload} has a synchronous implementation, such
   * as {@linkplain #reload the default implementation}.
   *
   * @since 17.0
   */
  @GwtIncompatible // Executor + Futures

        }
    }

    // Test reload with IOException
    public void test_reload_ioException() throws Exception {
        // This test verifies error handling during reload
        // Since we can't easily mock the IOException, we'll test with invalid data
        writeTestFile("invalid => "); // Invalid format

        try {
            charMappingFile.reload(null);

        }

        return false;
    }

    public SynonymMap getSynonymMap() {
        return synonymMap;
    }

    protected void createSynonymMap(final boolean reload) {
        try (Reader rulesReader = getReader(reload)) {
            if (rulesReader instanceof StringReader && ((StringReader) rulesReader).toString().length() == 0) {
                synonymMap = null;
                return;
            }

          @Override
          public Object load(Object key) {
            loadCount.incrementAndGet();
            return new Object();
          }

          @Override
          public ListenableFuture<Object> reload(Object key, Object oldValue) {
            reloadCount.incrementAndGet();
            return immediateFuture(new Object());
          }

          @Override
          public Map<Object, Object> loadAll(Iterable<?> keys) {

# 🥇 🔁

🙅 FastAPI 📁 💪 👀 💖 👉:

{* ../../docs_src/first_steps/tutorial001.py *}

📁 👈 📁 `main.py`.

🏃 🖖 💽:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
<span style="color: green;">INFO</span>:     Started reloader process [28720]

{* ../../docs_src/websockets/tutorial001.py hl[48:52] *}

👆 💪 📨 & 📨 💱, ✍, & 🎻 💽.

## 🔄 ⚫️

🚥 👆 📁 📛 `main.py`, 🏃 👆 🈸 ⏮️:

<div class="termy">

```console
$ uvicorn main:app --reload

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

</div>

## `fastapi dev`

Вызов `fastapi dev` запускает режим разработки.