# JSON con Bytes como Base64 { #json-with-bytes-as-base64 }

Si tu app necesita recibir y enviar datos JSON, pero necesitas incluir datos binarios en él, puedes codificarlos como base64.

## Base64 vs Archivos { #base64-vs-files }

* `prices` değişkeni bir `dict`'tir:
    * Bu `dict`'in key'leri `str` tipindedir (örneğin her bir öğenin adı).
    * Bu `dict`'in value'ları `float` tipindedir (örneğin her bir öğenin fiyatı).

#### Union { #union }

Bir değişkenin **birkaç tipten herhangi biri** olabileceğini bildirebilirsiniz; örneğin bir `int` veya bir `str`.

import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_REMOVE;
import static com.google.common.collect.testing.features.CollectionSize.ONE;
import static com.google.common.collect.testing.features.CollectionSize.ZERO;

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import org.junit.Ignore;

/**

import static com.google.common.collect.testing.features.CollectionSize.ONE;
import static com.google.common.collect.testing.features.CollectionSize.SEVERAL;
import static com.google.common.collect.testing.features.CollectionSize.ZERO;
import static com.google.common.collect.testing.testers.ReflectionFreeAssertThrows.assertThrows;

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.testing.features.CollectionFeature;

        // Test case 3: Zero value
        int zeroValue = 0;
        NdrLong ndrLongZero = new NdrLong(zeroValue);
        assertEquals(zeroValue, ndrLongZero.value, "Constructor should correctly initialize with zero.");

        // Test case 4: Max int value
        int maxIntValue = Integer.MAX_VALUE;

```JSON hl_lines="4-8"
{
    "openapi": "3.1.0",
    // More stuff here
    "servers": [
        {
            "url": "/api/v1"
        }
    ],
    "paths": {
            // More stuff here
    }
}
```

{* ../../docs_src/header_params/tutorial001_an_py310.py hl[9] *}

/// note | Detalles Técnicos

`Header` es una clase "hermana" de `Path`, `Query` y `Cookie`. También hereda de la misma clase común `Param`.

Pero recuerda que cuando importas `Query`, `Path`, `Header`, y otros de `fastapi`, en realidad son funciones que retornan clases especiales.

///

/// info | Información

        assertEquals(0, dst[35]);
    }

    @Test
    @DisplayName("Test writeParameterWordsWireFormat with zero parameter count")
    void testWriteParameterWordsWireFormatZeroParameters() {
        byte[] dst = new byte[256];

        // Set up transaction with zero parameters
        transaction.setTotalParameterCount(0);
        transaction.setTotalDataCount(100);

  }

  @SuppressWarnings("removal") // b/321209431 -- maybe just use valueOf here?
  @Generates
  Integer generateInteger() {
    return new Integer(generateInt());
  }

  @Generates
  long generateLong() {
    return generateInt();
  }

  @SuppressWarnings("removal") // b/321209431 -- maybe just use valueOf here?
  @Generates
  Long generateLongObject() {
    return new Long(generateLong());

 *       .result();
 * }
 * }
 *
 * <p>The value of this expression will have the same sign as the <i>first nonzero</i> comparison
 * result in the chain, or will be zero if every comparison result was zero.
 *
 * <p><b>Note:</b> {@code ComparisonChain} instances are <b>immutable</b>. For this utility to work
 * correctly, calls must be chained as illustrated above.
 *