The OAuth2 specification defines "scopes" as a list of strings separated by spaces.

The content of each of these strings can have any format, but should not contain spaces.

These scopes represent "permissions".

In OpenAPI (e.g. the API docs), you can define "security schemes".

When one of these security schemes uses OAuth2, you can also declare and use scopes.

Each "scope" is just a string (without spaces).

{"item_id":3}
```

/// check | "Verifique"



///

	Observe que o valor recebido pela função (e também retornado por ela) é `3`, como um Python `int`, não como uma string `"3"`.

	Então, com essa declaração de tipo, o **FastAPI** dá pra você um <abbr title="convertendo a string que veio do request HTTP em um dado Python">"parsing"</abbr> automático no request .

## Validação de dados

Wir erstellen eine `HTTPException`, die wir später an mehreren Stellen wiederverwenden (`raise`n) können.

func splitUSTARPath(name string) (prefix, suffix string, ok bool) {
	length := len(name)
	if length <= nameSize || !isASCII(name) {
		return "", "", false
	} else if length > prefixSize+1 {
		length = prefixSize + 1
	} else if name[length-1] == '/' {
		length--
	}

	i := strings.LastIndex(name[:length], "/")
	nlen := len(name) - i - 1 // nlen is length of suffix

Nós criamos uma `HTTPException` que nós podemos reutilizar (`raise`) mais tarde em diversos lugares.

////

## Set-Typen

Aber dann denken wir darüber nach und stellen fest, dass sich die Tags nicht wiederholen sollen, es sollen eindeutige Strings sein.

Python hat einen Datentyp speziell für Mengen eindeutiger Dinge: das <abbr title="Menge">`set`</abbr>.

Deklarieren wir also `tags` als Set von Strings.

//// tab | Python 3.10+

```Python hl_lines="12"
{!> ../../docs_src/body_nested_models/tutorial003_py310.py!}
```

     * @param activeProjectSelectors A {@link List} of project selectors that must be activated.
     * @deprecated Use {@link #activateOptionalProject(String)} or {@link #activateRequiredProject(String)} instead.
     */
    @Deprecated
    public void overwriteActiveProjects(List<String> activeProjectSelectors) {
        List<ProjectActivationSettings> projects = getProjects(pa -> pa.active).collect(Collectors.toList());

          ]]></description>
          <type>String</type>
        </field>
        <field>
          <name>layout</name>
          <version>1.0.0</version>
          <description>The type of layout this repository uses for locating and storing artifacts - can be "legacy" or
            "default".</description>
          <type>String</type>
          <defaultValue>default</defaultValue>
        </field>

 */
package org.apache.maven.artifact.repository.metadata;

/**
 * Problem storing the repository metadata in the local repository.
 *
 */
@Deprecated
public class RepositoryMetadataReadException extends Exception {
    public RepositoryMetadataReadException(String message) {
        super(message);
    }

    public RepositoryMetadataReadException(String message, Exception e) {
        super(message, e);
    }

 */
package org.apache.maven.artifact.repository.metadata;

/**
 * Problem storing the repository metadata in the local repository.
 *
 */
public class RepositoryMetadataStoreException extends Exception {
    public RepositoryMetadataStoreException(String message) {
        super(message);
    }

    public RepositoryMetadataStoreException(String message, Exception e) {
        super(message, e);
    }