{* ../../docs_src/body_nested_models/tutorial002_py310.py hl[12] *}

## Set types { #set-types }

But then we think about it, and realize that tags shouldn't repeat, they would probably be unique strings.

And Python has a special data type for sets of unique items, the `set`.

Then we can declare `tags` as a set of strings:

            pyproject.toml
      - name: Install GitHub Actions dependencies
        run: uv pip install -r requirements-github-actions.txt
      - name: Deploy Docs Status Pending
        run: python ./scripts/deploy_docs_status.py
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          COMMIT_SHA: ${{ github.event.workflow_run.head_sha }}
          RUN_ID: ${{ github.run_id }}
      - name: Clean site

          GITHUB_TOKEN: ${{ secrets.FASTAPI_TRANSLATIONS }}
          OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
      - name: FastAPI Translate
        run: |
          python ./scripts/translate.py ${{ github.event.inputs.command }}
          python ./scripts/translate.py make-pr
        env:
          GITHUB_TOKEN: ${{ secrets.FASTAPI_TRANSLATIONS }}
          OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}

import com.google.common.collect.testing.SampleElements.Strings;
import java.util.List;
import org.jspecify.annotations.NullMarked;

/**
 * TODO: javadoc.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
@NullMarked
public abstract class TestStringListGenerator implements TestListGenerator<String> {
  @Override
  public SampleElements<String> samples() {
    return new Strings();
  }

  @Override

In unserem Beispiel können wir also bewirken, dass `tags` spezifisch eine „Liste von Strings“ ist:

{* ../../docs_src/body_nested_models/tutorial002_py310.py hl[12] *}

## 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>.

 *
 * @author Paul Lindner
 */
@NullUnmarked
public class SplitterBenchmark {
  // overall size of string
  @Param({"1", "10", "100", "1000"})
  int length;

  // Number of matching strings
  @Param({"xxxx", "xxXx", "xXxX", "XXXX"})
  String text;

  private String input;

  private static final Splitter CHAR_SPLITTER = Splitter.on('X');
  private static final Splitter STRING_SPLITTER = Splitter.on("X");

<div class="termy">

```console
$ .venv\Scripts\Activate.ps1
```

</div>

////

//// tab | Windows Bash

Or if you use Bash for Windows (e.g. <a href="https://gitforwindows.org/" class="external-link" target="_blank">Git Bash</a>):

<div class="termy">

```console
$ source .venv/Scripts/activate
```

</div>

////

/// tip

                                <div class="row">
                                    <div class="col-sm-12">
                                        <table class="table table-bordered table-striped">
                                            <thead>
                                            <tr>
                                                <th><la:message key="labels.log_file_name"/></th>

Portanto, em nosso exemplo, podemos fazer com que `tags` sejam especificamente uma "lista de strings":


{* ../../docs_src/body_nested_models/tutorial002.py hl[14] *}

## Tipo "set"


Mas então, quando nós pensamos mais, percebemos que as tags não devem se repetir, elas provavelmente devem ser strings únicas.

E que o Python tem um tipo de dados especial para conjuntos de itens únicos, o `set`.

 * limitations under the License.
 */

package com.google.common.collect.testing;

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.testing.SampleElements.Strings;
import java.util.List;
import java.util.Set;
import org.jspecify.annotations.NullMarked;

/**
 * Create string sets for collection tests.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
@NullMarked