/// warning

The recommended way to handle the *startup* and *shutdown* is using the `lifespan` parameter of the `FastAPI` app as described above. If you provide a `lifespan` parameter, `startup` and `shutdown` event handlers will no longer be called. It's all `lifespan` or all events, not both.

You can probably skip this part.

///

There's an alternative way to define this logic to be executed during *startup* and during *shutdown*.

```console
// Create an env var MY_NAME in line for this program call
$ MY_NAME="Wade Wilson" python main.py

// Now it can read the environment variable

Hello Wade Wilson from Python

// The env var no longer exists afterwards
$ python main.py

Hello World from Python
```

</div>

/// tip

You can read more about it at [The Twelve-Factor App: Config](https://12factor.net/config).

///

Il existe une **variable d'environnement spéciale** appelée **`PATH`** qui est utilisée par les systèmes d'exploitation (Linux, macOS, Windows) pour trouver les programmes à exécuter.

La valeur de la variable `PATH` est une longue chaîne composée de répertoires séparés par deux-points `:` sous Linux et macOS, et par point-virgule `;` sous Windows.

Par exemple, la variable d'environnement `PATH` peut ressembler à ceci :

//// tab | Linux, macOS

# TODO(mihaimaruseac): Document this option or remove if no longer needed
common --enable_platform_specific_config

# Enable XLA support by default.
common --define=with_xla_support=true

# TODO(mihaimaruseac): Document this option or remove if no longer needed
common --config=short_logs

# TODO(mihaimaruseac): Document this option or remove if no longer needed
common --config=v2

- API
  - Ingress resources will no longer be served from `extensions/v1beta1` in v1.19. Migrate use to the `networking.k8s.io/v1beta1` API, available since v1.14. Existing persisted data can be retrieved via the `networking.k8s.io/v1beta1` API.

		return false
	case cache.finished() && time.Since(cache.lastHandout) > 5*metacacheMaxClientWait:
		// Keep for 15 minutes after we last saw the client.
		// Since the cache is finished keeping it a bit longer doesn't hurt us.
		return false
	case cache.status == scanStateError || cache.status == scanStateNone:
		// Remove failed listings after 5 minutes.
		return time.Since(cache.lastUpdate) > 5*time.Minute
	}
	return true

* Self hosted is no longer supported in the standard workflow. The feature flags have been removed and your self hosted cluster is no longer able to upgrade via kubeadm. ([#69878](https://github.com/kubernetes/kubernetes/pull/69878), [@Klaven](https://github.com/Klaven))

 *
 * @author Kevin Bourrillion
 * @since 2.0
 */
@Immutable(containerOf = "B")
@GwtIncompatible
// TODO(b/278589132): Remove the redundant "@NonNull" on B once it's no longer required by J2KT.
public final class ImmutableClassToInstanceMap<B>
    extends ForwardingMap<Class<? extends @NonNull B>, B>
    implements ClassToInstanceMap<B>, Serializable {

                      */

    Name() {
    }

    /**
     * Creates a NetBIOS name with the specified attributes.
     *
     * @param name the NetBIOS name (will be truncated to 15 characters if longer)
     * @param hexCode the NetBIOS name type/suffix
     * @param scope the NetBIOS scope identifier (uses default if null or empty)
     */
    public Name(String name, final int hexCode, final String scope) {

Ou vous pouvez avoir toute autre façon de communiquer avec l'endpoint WebSocket.

---

Mais pour cet exemple, nous utiliserons un document HTML très simple avec un peu de JavaScript, le tout dans une longue chaîne.

Cela, bien entendu, n'est pas optimal et vous ne l'utiliseriez pas en production.

En production, vous auriez l'une des options ci-dessus.