### Just Modern Python { #just-modern-python }

It's all based on standard **Python type** declarations (thanks to Pydantic). No new syntax to learn. Just standard modern Python.

If you need a 2 minute refresher of how to use Python types (even if you don't use FastAPI), check the short tutorial: [Python Types](python-types.md){.internal-link target=_blank}.

You write standard Python with types:

```Python
from datetime import date

import org.opensearch.search.aggregations.Aggregations;
import org.opensearch.search.fetch.subphase.highlight.HighlightField;

/**
 * Default implementation of RankFusionSearcher that performs standard OpenSearch queries.
 * This searcher handles query execution, response processing, and document highlighting.
 */
public class DefaultSearcher extends RankFusionSearcher {

    /** Logger for this class. */

                .put("analysis.analyzer.test_reading_analyzer.tokenizer", "standard")
                .put("analysis.analyzer.test_reading_term_analyzer.type", "custom")
                .put("analysis.analyzer.test_reading_term_analyzer.tokenizer", "standard")
                .put("analysis.analyzer.test_reading_analyzer_ja.type", "custom")

//     multi-delete operation. The same registry key setting overwrites the storage-defined setting.
//     Optional value, default 1000, range: 1-unlimited (S3 standard maximum is 1000 and should not be set higher)
//
//   - <StorageConcurrentTasksLimit>
//     Setting reduces the parallel Repository Task slots that offload or write data to object storage. The same user interface

 * <code>WriteFile</code>, and <code>CloseFile</code> A byte-type pipe can
 * be opened, written to, read from and closed using the standard Win32
 * file operations.
 * </ul>
 *
 * <p>
 * The jCIFS API maps all of these operations into the standard Java
 * <code>XxxputStream</code> interface. A special <code>PIPE_TYPE</code>
 * flags is necessary to distinguish which type of Named Pipe behavior
 * is desired.

  protected abstract ListenableFuture<? extends V> delegate();

  @Override
  public void addListener(Runnable listener, Executor exec) {
    delegate().addListener(listener, exec);
  }

  // TODO(cpovirk): Use standard Javadoc form for SimpleForwarding* class and constructor
  /**
   * A simplified version of {@link ForwardingListenableFuture} where subclasses can pass in an
   * already constructed {@link ListenableFuture} as the delegate.

     */
    public void setMaxOutputLine(final int maxOutputLine) {
        this.maxOutputLine = maxOutputLine;
    }

    /**
     * Sets whether to redirect standard output.
     * @param standardOutput true to redirect standard output, false otherwise.
     */
    public void setStandardOutput(final boolean standardOutput) {
        this.standardOutput = standardOutput;
    }

     * File end-of-file information class constant.
     */
    byte FILE_ENDOFFILE_INFO = 20;

    /**
     * File basic information class constant.
     */
    byte FILE_BASIC_INFO = 0x4;
    /**
     * File standard information class constant.
     */
    byte FILE_STANDARD_INFO = 0x5;

    /**
     * File internal information class constant.
     */
    byte FILE_INTERNAL_INFO = 0x6;

    /**

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;

/**
 * Access to {@link Type} registry.
 * <p>
 * This registry provides access to all registered artifact types, both standard types
 * provided by Maven and custom types registered through SPI provider implementations.
 *
 * @since 4.0.0
 */
@Experimental
public interface TypeRegistry extends ExtensibleEnumRegistry<Type> {

    /**

<div class="termy">

```console
$ pip install "fastapi[standard]"

---> 100%
```

</div>

////

//// tab | `uv`

Если у вас установлен <a href="https://github.com/astral-sh/uv" class="external-link" target="_blank">`uv`</a>:

<div class="termy">

```console
$ uv pip install "fastapi[standard]"
---> 100%
```

</div>

////