{* ../../docs_src/security/tutorial004_an_py310.py hl[4,7,13:15,29:31,82:90] *}

## Update the dependencies { #update-the-dependencies }

Update `get_current_user` to receive the same token as before, but this time, using JWT tokens.

Decode the received token, verify it, and return the current user.

If the token is invalid, return an HTTP error right away.

// io.ErrUnexpectedEOF when io.EOF is hit before len(b) bytes are read.
func mustReadFull(r io.Reader, b []byte) (int, error) {
	n, err := tryReadFull(r, b)
	if err == io.EOF {
		err = io.ErrUnexpectedEOF
	}
	return n, err
}

// tryReadFull is like io.ReadFull except it returns
// io.EOF when it is hit before len(b) bytes are read.
func tryReadFull(r io.Reader, b []byte) (n int, err error) {

    - [Container Images](#container-images-3)
  - [Changelog since v1.34.0](#changelog-since-v1340)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST read this before you upgrade)](#no-really-you-must-read-this-before-you-upgrade)
  - [Changes by Kind](#changes-by-kind-3)
    - [Deprecation](#deprecation)
    - [API Change](#api-change)
    - [Feature](#feature-2)
    - [Documentation](#documentation)

        this.strategies = strategies;
    }

    /**
     * Executes all applicable upgrade strategies in priority order.
     * Each strategy is checked for applicability before execution.
     *
     * @param context the upgrade context
     * @param pomMap map of all POM files in the project
     * @return the overall result of all strategy executions
     */

        "tax": 3.2
    },
    "user": {
        "username": "dave",
        "full_name": "Dave Grohl"
    }
}
```

/// note

Notice that even though the `item` was declared the same way as before, it is now expected to be inside of the body with a key `item`.

///

**FastAPI** will do the automatic conversion from the request, so that the parameter `item` receives its specific content and the same for `user`.

                    // be explicitly safe here to avoid interleaving output from multiple test suites
                    synchronized (this) {
                        // make sure we've flushed everything to disk before reading
                        eventWriter.flush();

                        System.err.println("\n\nSuite: " + suite);

                        try (BufferedReader reader = eventWriter.reader()) {

   *
   * The target execution time is implemented on a best-effort basis. If another task in this queue
   * is running when that time is reached, that task is allowed to complete before this task is
   * started. Similarly the task will be delayed if the host lacks compute resources.
   *
   * @throws RejectedExecutionException if the queue is shut down and the task is not cancelable.
   */
  fun schedule(

        Did you *actually* encounter the need for this feature in a real-world scenario, or is it
        just a feature that seems like a sensible addition to Guava?


        Before new features get added to Guava, we really want to be sure that it's for a use case
        that actually comes up in the real world. We want to hear the real-world use case so the

                    originalCause));
        }

        return CompletableFuture.supplyAsync(() -> {
            try {
                // Wait before retry (except first attempt)
                if (attempt > 0) {
                    long delay = retryDelay * (1L << attempt); // Exponential backoff
                    Thread.sleep(delay);

				allEmpty = false
				break
			}
		}
		if allEmpty {
			j.ObjectV2.PartETags = nil
		}
	}
	return o, err
}

// xlMetaV2VersionHeaderV2 is a version 2 of xlMetaV2VersionHeader before EcN and EcM were added.
type xlMetaV2VersionHeaderV2 struct {
	*xlMetaV2VersionHeader
}

// UnmarshalMsg implements msgp.Unmarshaler
func (z *xlMetaV2VersionHeaderV2) UnmarshalMsg(bts []byte) (o []byte, err error) {