return 3;
  }

  // TODO: Consolidate different copies in one single place.
  static String format(String template, Object... args) {
    // start substituting the arguments into the '%s' placeholders
    StringBuilder builder = new StringBuilder(template.length() + 16 * args.length);
    int templateStart = 0;
    int i = 0;
    while (i < args.length) {

import java.util.Iterator;
import java.util.NoSuchElementException;

import org.codelibs.core.exception.ClUnsupportedOperationException;

/**
 * Adaptor that makes an array into an {@link Iterator}.
 * <p>
 * Usage example:
 * </p>
 *
 * <pre>
 * import static org.codelibs.core.collection.ArrayIterator.*;
 *
 * String[] array = ...;
 * for (String element : iterable(array)) {

Para instalarlo manualmente, asegúrate de crear un [entorno virtual](../../virtual-environments.md){.internal-link target=_blank}, activarlo, y luego instalarlo con:

```console
$ pip install python-multipart
```

Esto se debe a que **OAuth2** utiliza "form data" para enviar el `username` y `password`.

///

Ejecuta el ejemplo con:

<div class="termy">

```console
$ fastapi dev main.py

SuccessExitStatus=143

# Specifies the maximum file descriptor number that can be opened by this process
LimitNOFILE=${packaging.os.max.open.files}

# Specifies the maximum number of bytes of memory that may be locked into RAM
# Set to "infinity" if you use the 'bootstrap.mlockall: true' option
# in fess.yml and 'MAX_LOCKED_MEMORY=unlimited' in ${packaging.env.file}
#LimitMEMLOCK=infinity

          required: true
  - type: input
    id: language
    attributes:
      label: Target Language
      description: What language do you want to translate the FastAPI docs into?
      placeholder: e.g. Latin
    validations:
      required: true
  - type: textarea
    id: additional_info
    attributes:
      label: Additional Information

// Note that returning an error here will cause the Metrics handler to return a
// 500 Internal Server Error.
type MetricsLoaderFn func(context.Context, MetricValues, *metricsCache) error

// JoinLoaders - joins multiple loaders into a single loader. The returned
// loader will call each of the given loaders in order. If any of the loaders
// return an error, the returned loader will return that error.

        assertEquals("test/path/osdd.xml", osddHelper.osddPath);
    }

    public void test_setEncoding() {
        final OsddHelper osddHelper = new OsddHelper();
        osddHelper.setEncoding("ISO-8859-1");
        assertEquals("ISO-8859-1", osddHelper.encoding);
    }

    public void test_setContentType() {
        final OsddHelper osddHelper = new OsddHelper();
        osddHelper.setContentType("application/xml");

        // Decode into first instance
        FileStandardInfo firstInstance = new FileStandardInfo();
        firstInstance.decode(originalBuffer, 0, originalBuffer.length);

        // Encode from first instance
        byte[] encodedBuffer = new byte[22];
        firstInstance.encode(encodedBuffer, 0);

        // Decode into second instance

```JSON
{"item_id":3}
```

/// check

👀 👈 💲 👆 🔢 📨 (& 📨) `3`, 🐍 `int`, 🚫 🎻 `"3"`.

, ⏮️ 👈 🆎 📄, **FastAPI** 🤝 👆 🏧 📨 <abbr title="converting the string that comes from an HTTP request into Python data">"✍"</abbr>.

///

## 💽 🔬

✋️ 🚥 👆 🚶 🖥 <a href="http://127.0.0.1:8000/items/foo" class="external-link" target="_blank">http://127.0.0.1:8000/items/foo</a>, 👆 🔜 👀 👌 🇺🇸🔍 ❌:

```JSON
{

<img src="/img/tutorial/body/image02.png">

## Soporte del editor

En tu editor, dentro de tu función, obtendrás anotaciones de tipos y autocompletado en todas partes (esto no sucedería si recibieras un `dict` en lugar de un modelo de Pydantic):

<img src="/img/tutorial/body/image03.png">

También recibirás chequeos de errores para operaciones de tipo incorrecto: