import org.codelibs.core.collection.CaseInsensitiveMap;
import org.codelibs.core.convert.ByteConversionUtil;
import org.codelibs.core.convert.DoubleConversionUtil;
import org.codelibs.core.convert.FloatConversionUtil;
import org.codelibs.core.convert.IntegerConversionUtil;
import org.codelibs.core.convert.LongConversionUtil;
import org.codelibs.core.convert.ShortConversionUtil;
import org.codelibs.core.exception.BeanFieldSetAccessibleFailureException;

# Return a Response Directly

When you create a **FastAPI** *path operation* you can normally return any data from it: a `dict`, a `list`, a Pydantic model, a database model, etc.

By default, **FastAPI** would automatically convert that return value to JSON using the `jsonable_encoder` explained in [JSON Compatible Encoder](../tutorial/encoder.md){.internal-link target=_blank}.

So, even with the code above that doesn't use Pydantic explicitly, FastAPI is using Pydantic to convert those standard dataclasses to Pydantic's own flavor of dataclasses.

And of course, it supports the same:

* data validation
* data serialization
* data documentation, etc.

import org.codelibs.core.beans.factory.ParameterizedClassDescFactory;
import org.codelibs.core.convert.BooleanConversionUtil;
import org.codelibs.core.convert.CalendarConversionUtil;
import org.codelibs.core.convert.DateConversionUtil;
import org.codelibs.core.convert.NumberConversionUtil;
import org.codelibs.core.convert.TimeConversionUtil;
import org.codelibs.core.convert.TimestampConversionUtil;

                        "tax": 3.2,
                    },
                },
                "converted": {
                    "summary": "An example with converted data",
                    "description": "FastAPI can convert price `strings` to actual `numbers` automatically",
                    "value": {
                        "name": "Bar",
                        "price": "35.4",
                    },
                },

import static org.codelibs.core.misc.AssertionUtil.assertArgumentNotNull;

import java.util.Date;

import org.codelibs.core.beans.Converter;
import org.codelibs.core.convert.StringConversionUtil;
import org.codelibs.core.convert.TimestampConversionUtil;

/**
 * 日時用のコンバータです。
 *
 * @author higa
 */
public class TimestampConverter implements Converter {

    /**
     * 日時のパターンです。
     */

public final class RequestTraceHelper {

    /**
     * Method that creates some informational string based on passed in {@link RequestTrace}. The contents of request
     * trace can literally be anything, but this class tries to cover "most common" cases that are happening in Maven.
     */
    public static String interpretTrace(boolean detailed, RequestTrace requestTrace) {
        while (requestTrace != null) {

    new_index_content = f"{missing_translation_snippet}\n\n{en_index_content}"
    new_index_path.write_text(new_index_content, encoding="utf-8")
    typer.secho(f"Successfully initialized: {new_path}", color=typer.colors.GREEN)
    update_languages()


@app.command()
def build_lang(
    lang: str = typer.Argument(
        ..., callback=lang_callback, autocompletion=complete_existing_lang
    ),
) -> None:
    """

                        "tax": 3.2,
                    },
                },
                "converted": {
                    "summary": "An example with converted data",
                    "description": "FastAPI can convert price `strings` to actual `numbers` automatically",
                    "value": {
                        "name": "Bar",
                        "price": "35.4",
                    },
                },

import org.jline.consoleui.prompt.builder.PromptBuilder;
import org.jline.reader.Candidate;
import org.jline.reader.Completer;
import org.jline.reader.LineReader;
import org.jline.reader.ParsedLine;
import org.jline.utils.Colors;

import static org.apache.maven.cling.invoker.mvnenc.DefaultEncryptInvoker.BAD_OPERATION;
import static org.apache.maven.cling.invoker.mvnenc.DefaultEncryptInvoker.OK;

/**
 * The "init" goal.
 */
@Singleton