## Singular values in body

The same way there is a `Query` and `Path` to define extra data for query and path parameters, **FastAPI** provides an equivalent `Body`.

For example, extending the previous model, you could decide that you want to have another key `importance` in the same body, besides the `item` and `user`.

 * the License.
 */

package com.google.common.base;

import com.google.common.annotations.GwtCompatible;

/**
 * Holder for extra methods of {@code Objects} only in web. Intended to be empty for regular
 * version.
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault

 * the License.
 */

package com.google.common.primitives;

import com.google.common.annotations.GwtCompatible;

/**
 * Holder for web specializations of methods of {@code Doubles}. Intended to be empty for regular
 * version.
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault

 * the License.
 */

package com.google.common.primitives;

import com.google.common.annotations.GwtCompatible;

/**
 * Holder for web specializations of methods of {@code Floats}. Intended to be empty for regular
 * version.
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault

        self,
        func: Annotated[
            Callable[P, Any],
            Doc(
                """
                The function to call after the response is sent.

                It can be a regular `def` function or an `async def` function.
                """
            ),
        ],
        *args: P.args,
        **kwargs: P.kwargs,
    ) -> None:
        """

schemaVersion: 2.2.0
attributes:
  space:
    instanceType: regular
    editor:
      type: Idea
components:
  - name: kotlin-build-env
    container:

Você pode definir uma <abbr title="Uma expressão regular, regex ou regexp é uma sequência de caracteres que define um parâmetro de busca para textos.">expressão regular</abbr> que combine com um padrão esperado pelo parâmetro:

```Python hl_lines="11"
{!../../../docs_src/query_params_str_validations/tutorial004.py!}
```

Essa expressão regular específica verifica se o valor recebido no parâmetro:

		apiErr.Description = err.Error()
		writeErrorResponse(ctx, w, apiErr, url)
		return
	}
}

// Parses x-amz-copy-source-range for CopyObjectPart API. Its behavior
// is different from regular HTTP range header. It only supports the
// form `bytes=first-last` where first and last are zero-based byte
// offsets. See
// http://docs.aws.amazon.com/AmazonS3/latest/API/mpUploadUploadPartCopy.html

type iamCache struct {
	updatedAt time.Time

	// map of policy names to policy definitions
	iamPolicyDocsMap map[string]PolicyDoc

	// map of regular username to credentials
	iamUsersMap map[string]UserIdentity
	// map of regular username to policy names
	iamUserPolicyMap *xsync.MapOf[string, MappedPolicy]

	// STS accounts are loaded on demand and not via the periodic IAM reload.

// errVolumeExists - cannot create same volume again.
var errVolumeExists = StorageErr("volume already exists")

// errIsNotRegular - not of regular file type.
var errIsNotRegular = StorageErr("not of regular file type")

// errPathNotFound - cannot find the path.
var errPathNotFound = StorageErr("path not found")

// errVolumeNotFound - cannot find the volume.