```Python hl_lines="1  13"
{!../../docs_src/events/tutorial003.py!}
```

**🔑 👨‍💼** 🐍 🕳 👈 👆 💪 ⚙️ `with` 📄, 🖼, `open()` 💪 ⚙️ 🔑 👨‍💼:

```Python
with open("file.txt") as file:
    file.read()
```

⏮️ ⏬ 🐍, 📤 **🔁 🔑 👨‍💼**. 👆 🔜 ⚙️ ⚫️ ⏮️ `async with`:

```Python
async with lifespan(app):
    await do_stuff()
```

	"github.com/minio/minio-go/v7"
	"github.com/minio/minio-go/v7/pkg/credentials"
)

// Returns a base64 encoded random 32 byte string.
func randomState() string {
	b := make([]byte, 32)
	rand.Read(b)
	return base64.RawURLEncoding.EncodeToString(b)
}

var (
	stsEndpoint    string
	configEndpoint string
	clientID       string
	clientSec      string
	clientScopes   string
	port           int
)

}
```

These credentials can now be used to perform MinIO API operations, these credentials automatically expire in 1hr. To understand more about credential expiry duration and client grants STS API read further [here](https://github.com/minio/minio/blob/master/docs/sts/client-grants.md).

## Explore Further

- [MinIO STS Quickstart Guide](https://min.io/docs/minio/linux/developers/security-token-service.html)

		"Total number of bytes sent", "type")
	apiTrafficRecvBytesMD = NewCounterMD(apiTrafficRecvBytes,
		"Total number of bytes received", "type")
)

// loadAPIRequestsHTTPMetrics - reads S3 HTTP metrics.
//
// This is a `MetricsLoaderFn`.
//
// This includes node level S3 HTTP metrics.
//
// This function currently ignores `opts`.

    @RetainedLocalRef F localFallback = fallback;
    if (localInputFuture == null | localExceptionType == null | localFallback == null
        // This check, unlike all the others, is a volatile read
        || isCancelled()) {
      return;
    }
    inputFuture = null;

    // For an explanation of the cases here, see the comments on AbstractTransformFuture.run.
    V sourceResult = null;

      /*
       * If another handleException() caller created the set, we need to use that copy in case yet
       * other callers have added to it.
       *
       * This read is guaranteed to get us the right value because we only set this once (here).
       *
       * requireNonNull is safe because either our compareAndSet succeeded or it failed because
       * another thread did it for us.

 * credentials are retrieved from the <tt>jcifs.smb.client.domain</tt>,
 * <tt>jcifs.smb.client.username</tt>, and <tt>jcifs.smb.client.password</tt>
 * properties.
 * <p>
 * Read <a href="../../../authhandler.html">jCIFS Exceptions and
 * NtlmAuthenticator</a> for related information.
 * 
 * @deprecated use {@link NtlmPasswordAuthenticator} instead
 */
@Deprecated

Use the `tags` parameter with your *path operations* (and `APIRouter`s) to assign them to different tags:

```Python hl_lines="21  26"
{!../../docs_src/metadata/tutorial004.py!}
```

/// info

Read more about tags in [Path Operation Configuration](path-operation-configuration.md#tags){.internal-link target=_blank}.

///

### Check the docs

Now, if you check the docs, they will show all the additional metadata:

        if (connections.isEmpty()) cleanupQueue.cancelAll()

        // Clean up again immediately.
        return 0L
      }

      earliestEvictableConnection != null -> {
        // A connection will be ready to evict soon.
        return earliestEvictableIdleAtNs + keepAliveDurationNs - now
      }

      inUseConnectionCount > 0 -> {

		ptr := globalDeploymentIDPtr.Load()
		if ptr == nil {
			return ""
		}
		return *ptr
	}

	globalAllHealState = newHealState(GlobalContext, true)

	// The always present healing routine ready to heal objects
	globalBackgroundHealRoutine = newHealRoutine()
	globalBackgroundHealState   = newHealState(GlobalContext, false)

	globalMRFState = newMRFState()

	// If writes to FS backend should be O_SYNC.