Construisez ensuite la valeur par défaut de votre paramètre avec `Query`, en choisissant 50 comme `max_length` :

```Python hl_lines="9"
{!../../../docs_src/query_params_str_validations/tutorial002.py!}
```

Comme nous devons remplacer la valeur par défaut `None` dans la fonction par `Query()`, nous pouvons maintenant définir la valeur par défaut avec le paramètre `Query(default=None)`, il sert le même objectif qui est de définir cette valeur par défaut.

    python_interpreter_target = interpreter,
    requirements = "//:requirements_lock_" + TF_PYTHON_VERSION.replace(".", "_") + ".txt",
)

load("@pypi//:requirements.bzl", "install_deps")

install_deps()

# Initialize the TensorFlow repository and all dependencies.
#
# The cascade of load() statements and tf_workspace?() calls works around the

py_test(
    name = "test_import_api_packages",
    srcs = ["test_import_api_packages.py"],
    deps = ["@pypi_tensorflow//:pkg"],

    * https://istio.io/latest/news/security/
    * https://istio.io/latest/docs/ops/best-practices/security/

For further documentation see https://istio.io website

{{-
  $deps := dict
    "global.outboundTrafficPolicy" "meshConfig.outboundTrafficPolicy"
    "global.certificates" "meshConfig.certificates"
    "global.localityLbSetting" "meshConfig.localityLbSetting"

# - bats: bash unit testing framework
#         NOTE: v1.6.0 seems to have a bug that made "git" in setup_file break
# - bazelisk: always use the correct bazel version
# - buildifier: clean bazel build deps
# - buildozer: clean bazel build deps
RUN git clone --branch v1.7.0 https://github.com/bats-core/bats-core.git && bats-core/install.sh /usr/local && rm -rf bats-core

      - name: Run source distribution tests
        run: |
          cd dist/fastapi*/
          bash scripts/test.sh
      - name: Build wheel distribution
        run: |
          cd dist
          pip wheel --no-deps fastapi*.tar.gz
      - name: Dump GitHub context
        env:
          GITHUB_CONTEXT: ${{ toJson(github) }}

    {!> ../../../docs_src/body_multiple_params/tutorial004.py!}
    ```

!!! info "Informação"
    `Body` também possui todas as validações adicionais e metadados de parâmetros como em `Query`,`Path` e outras que você verá depois.

## Declare um único parâmetro de corpo indicando sua chave

Suponha que você tem um único parâmetro de corpo `item`, a partir de um modelo Pydantic `Item`.

```Python hl_lines="9"
{!../../../docs_src/query_params/tutorial001.py!}
```

A consulta é o conjunto de pares chave-valor que vai depois de `?` na URL, separado pelo caractere `&`.

Por exemplo, na URL:

```
http://127.0.0.1:8000/items/?skip=0&limit=10
```

...os parâmetros da consulta são:

* `skip`: com o valor `0`

        assertNotNull(result);
        List<Dependency> deps = new ArrayList<>(result.getDependencies().keySet());
        List<Dependency> deps2 = result.getNodes().stream()
                .map(Node::getDependency)
                .filter(Objects::nonNull)
                .collect(Collectors.toList());
        assertEquals(deps, deps2);
        for (Dependency dep : deps2) {
            dep.getVersion();

3.  Guava has one dependency that is needed for linkage at runtime:
    `com.google.guava:failureaccess:1.0.2`. It also has
    [some annotation-only dependencies][guava-deps], which we discuss in more
    detail at that link.

4.  Serialized forms of ALL objects are subject to change unless noted
    otherwise. Do not persist these and assume they can be read by a future