Первая часть функции, до `yield`, будет выполнена до запуска приложения.

А часть после `yield` будет выполнена после завершения работы приложения.

### Асинхронный менеджер контекста { #async-context-manager }

Если присмотреться, функция декорирована `@asynccontextmanager`.

Это превращает функцию в «асинхронный менеджер контекста».

{* ../../docs_src/events/tutorial003_py39.py hl[1,13] *}

...and declare its type as the model you created, `Item`.

## Results { #results }

With just that Python type declaration, **FastAPI** will:

* Read the body of the request as JSON.
* Convert the corresponding types (if needed).
* Validate the data.
    * If the data is invalid, it will return a nice and clear error, indicating exactly where and what was the incorrect data.

    // The top bit is set, which means that the double value is going to come from the top 53 bits.
    // So we can ignore the bottom 11, except for rounding. We can unsigned-shift right 1, aka
    // unsigned-divide by 2, and convert that. Then we'll get exactly half of the desired double
    // value. But in the specific case where the bottom two bits of the original number are 01, we
    // want to replace that with 1 in the shifted value for correct rounding.

constraints.ParametersScriptAssert.message = A expressão de script "{script}" não é verdadeira.
constraints.Range.message = {item} deve estar entre {min} e {max}.
constraints.SafeHtml.message = {item} contém conteúdo HTML perigoso.
constraints.ScriptAssert.message = A expressão de script "{script}" não é verdadeira.
constraints.URL.message = {item} não é uma URL válida.
constraints.Required.message = {item} é obrigatório.

   * ```
   *
   * 4. Different values
   *
   * ```
   * Content-Type: text/html
   * Content-Length: 050
   * ```
   *
   * Applications that require semantically equal headers should convert them into a canonical form
   * before comparing them for equality.
   */
  override fun equals(other: Any?): Boolean = commonEquals(other)

  override fun hashCode(): Int = commonHashCode()

  /**

Whenever you pass exactly the same content (exactly the same password) you get exactly the same gibberish.

But you cannot convert from the gibberish back to the password.

##### Why use password hashing { #why-use-password-hashing }

If your database is stolen, the thief won't have your users' plaintext passwords, only the hashes.

		},
		{
			name: "any form value starting with X-Amz-Server-Side-Encryption- does not have to appear in policy",
			fv: defaultFormVals.Clone().
				Set(xhttp.AmzServerSideEncryptionKmsContext, "context-val").
				Set(xhttp.AmzServerSideEncryptionCustomerAlgorithm, "algo-val"),
		},
	}

	// Run tests
	for _, tt := range testCases {
		t.Run(tt.name, func(t *testing.T) {
			if tt.expired {

tenant isolation, resource allocation, model sharing and hardware attacks.

### Tenant isolation

Since any tenants or users providing models, graphs or checkpoints can execute
code in context of the TensorFlow service, it is important to design isolation
mechanisms that prevent unwanted access to the data from other tenants.

Network isolation between different models is also important not only to prevent

    }

    /**
     * Converts an SmbException to an IOException.
     *
     * @param se the SmbException to convert
     * @return the resulting IOException
     */
    protected IOException seToIoe(final SmbException se) {
        IOException ioe = se;
        Throwable root = se.getRootCause();

        handshakeCertificates.sslSocketFactory(),
        handshakeCertificates.trustManager,
      ).build()
  }

  private fun buildServerSslSocketFactory(): SSLSocketFactory {
    // The test uses JDK default SSL Context instead of the Platform provided one
    // as Conscrypt seems to have some differences, we only want to test client side here.
    return try {
      val keyManager =
        newKeyManager(
          null,