{* ../../docs_src/json_base64_bytes/tutorial001_py310.py ln[1:9,29:35] hl[9] *}

Se você verificar a `/docs`, verá que o campo `data` espera bytes codificados em base64:

<div class="screenshot">
<img src="/img/tutorial/json-base64-bytes/image01.png">

  "content": "hello"
}
```

## Pydantic `bytes` для вихідних даних { #pydantic-bytes-for-output-data }

Ви також можете використовувати поля `bytes` з `ser_json_bytes` у конфігурації моделі для вихідних даних, і Pydantic серіалізує байти як base64 під час формування відповіді JSON.

{* ../../docs_src/json_base64_bytes/tutorial001_py310.py ln[1:2,12:16,29,38:41] hl[16] *}

{* ../../docs_src/json_base64_bytes/tutorial001_py310.py ln[1:9,29:35] hl[9] *}

Si revisas `/docs`, verás que el campo `data` espera bytes codificados en base64:

<div class="screenshot">
<img src="/img/tutorial/json-base64-bytes/image01.png">
</div>

N'utilisez base64 que si vous devez absolument inclure des données binaires dans du JSON et que vous ne pouvez pas utiliser des fichiers pour cela.

## Pydantic `bytes` { #pydantic-bytes }

    assertThat(Point.ADAPTER.toDer(point)).isEqualTo(bytes)
  }

  @Test fun `point with only y set`() {
    val bytes = "3003810109".decodeHex()
    val point = Point(null, 9L)
    assertThat(Point.ADAPTER.fromDer(bytes)).isEqualTo(point)
    assertThat(Point.ADAPTER.toDer(point)).isEqualTo(bytes)
  }

  @Test fun `point with both fields set`() {

    // loop we keep 56 bytes of state: v, w, x, y, and z.
    long x = load64(bytes, offset);
    long y = load64(bytes, offset + length - 16) ^ K1;
    long z = load64(bytes, offset + length - 56) ^ K0;
    long[] v = new long[2];
    long[] w = new long[2];
    weakHashLength32WithSeeds(bytes, offset + length - 64, length, y, v);

        // Prepare test data - 24 bytes for resume key + 4 bytes for context length
        byte[] buffer = new byte[28];

        // Fill resume key with test pattern
        for (int i = 0; i < 24; i++) {
            buffer[i] = (byte) (i + 1);
        }

        // Add context length (reserved) - 4 bytes
        buffer[24] = 0x00;
        buffer[25] = 0x00;
        buffer[26] = 0x00;

    byte[] bytes = newPreFilledByteArray(100);
    skipHelper(0, 0, new ByteArrayInputStream(bytes));
    skipHelper(50, 50, new ByteArrayInputStream(bytes));
    skipHelper(50, 50, new SlowSkipper(new ByteArrayInputStream(bytes), 1));
    skipHelper(50, 50, new SlowSkipper(new ByteArrayInputStream(bytes), 0));
    skipHelper(100, -1, new ByteArrayInputStream(bytes));

	}{
		{
			SQL:           "create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at, email, role, pass) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
			NumericRegexp: nil,
			Vars:          []interface{}{"jinzhu", 1, 999.99, true, []byte("12345"), tt, &tt, nil, "w@g.\"com", myrole, pwd},

        SMBUtil.writeInt4(100, buffer, bufferIndex + 11);

        // parameterOffset (4 bytes)
        SMBUtil.writeInt4(64, buffer, bufferIndex + 15);

        // parameterDisplacement (4 bytes)
        SMBUtil.writeInt4(0, buffer, bufferIndex + 19);

        // dataCount (4 bytes)
        SMBUtil.writeInt4(200, buffer, bufferIndex + 23);

        // dataOffset (4 bytes)