porque el parámetro de path `item_id` tenía un valor de `"foo"`, que no es un `int`.

El mismo error aparecería si proporcionaras un `float` en lugar de un `int`, como en: [http://127.0.0.1:8000/items/4.2](http://127.0.0.1:8000/items/4.2)

/// check | Revisa

Entonces, con la misma declaración de tipo de Python, **FastAPI** te ofrece validación de datos.

Nota que el error también indica claramente el punto exacto donde la validación falló.

        collector.add(Severity.WARNING, null, 42, 127, e2);

        assertEquals(2, collector.getProblems().size());

        Problem p1 = collector.getProblems().get(0);
        assertEquals(Severity.ERROR, p1.getSeverity());
        assertEquals("MESSAGE1", p1.getMessage());
        assertEquals(-1, p1.getLineNumber());
        assertEquals(-1, p1.getColumnNumber());
        assertNull(p1.getException());

                """
                By default, if no HTTP Authorization header is provided, required for
                OpenID Connect authentication, it will automatically cancel the request
                and send the client an error.

                If `auto_error` is set to `False`, when the HTTP Authorization header
                is not available, instead of erroring out, the dependency result will
                be `None`.

user  nginx;
worker_processes  auto;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  4096;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '

)

// loadClusterScannerMetrics - `MetricsLoaderFn` for cluster webhook
// such as failed objects and directories scanned.
func loadClusterScannerMetrics(ctx context.Context, m MetricValues, c *metricsCache) error {
	m.Set(scannerBucketScansFinished, float64(globalScannerMetrics.lifetime(scannerMetricScanBucketDrive)))

	}

	roleARN := os.Getenv("ROLE_ARN")
	webID := cr.STSWebIdentity{
		Client:      &http.Client{},
		STSEndpoint: endpoint,
		GetWebIDTokenExpiry: func() (*cr.WebIdentityToken, error) {
			return &cr.WebIdentityToken{
				Token: oidcToken,
			}, nil
		},
		RoleARN: roleARN,
	}

	value, err := webID.Retrieve()
	if err != nil {
		log.Fatalf("Expected to generate credentials: %v", err)

		{"2010-02-03T04:11:30.23-08:00", time.Date(2010, 2, 3, 4, 11, 30, 230000000, fakeLosAngeles)},
	}
	for i, tc := range cases {
		tval, err := parseSQLTimestamp(tc.s)
		if err != nil {
			t.Errorf("Case %d: Unexpected error: %v", i+1, err)
			continue
		}
		if !tval.Equal(tc.t) {
			t.Errorf("Case %d: Expected %v got %v", i+1, tc.t, tval)
			continue
		}

		tstr := FormatSQLTimestamp(tc.t)
		if tstr != tc.s {

  source "${BASH_SOURCE%/*}/utilities/setup.sh"
  tfrun bazel "${TF_ANY_MODE:-test}" $TFCI_BAZEL_COMMON_ARGS $TF_ANY_TARGETS
else
  echo 'Looks like $TF_ANY_TARGETS are $TF_ANY_SCRIPT are both empty. That is an error.'
  exit 1

	response, err := s.client.Do(request)
	c.Assert(err, nil)
	c.Assert(response.StatusCode, http.StatusOK)

	// constructing HTTP request to fetch a non-existent object.
	// expected to fail, error response asserted for expected error values later.
	objectName := "testObject"
	request, err = newTestSignedRequest(http.MethodGet, getGetObjectURL(s.endPoint, bucketName, objectName),
		0, nil, s.accessKey, s.secretKey, s.signer)

        handler -->> client: HTTP error response
    end
    dep ->> operation: Run dependency, e.g. DB session
    opt raise
        operation -->> dep: Raise Exception (e.g. HTTPException)
        opt handle
            dep -->> dep: Can catch exception, raise a new HTTPException, raise other exception
        end
        handler -->> client: HTTP error response
    end