## Example Lambda handler

Install the necessary dependencies.
```sh
pip install flask requests
```

Following is an example lambda handler.
```py
from flask import Flask, request, abort, make_response
import requests

app = Flask(__name__)

        def __init__(self):
            self.data = [1.0, 2.0, 3.0]

    FakeNumpyArrayPydantic = Annotated[
        FakeNumpyArray,
        WithJsonSchema(TypeAdapter(list[float]).json_schema()),
        PlainSerializer(lambda v: v.data),
    ]

    class MyModel(BaseModel):
        model_config = ConfigDict(arbitrary_types_allowed=True)
        custom_field: FakeNumpyArrayPydantic

    app = FastAPI()

    @app.get("/")

ENCODERS_BY_TYPE: dict[type[Any], Callable[[Any], Any]] = {
    bytes: lambda o: o.decode(),
    Color: str,
    datetime.date: isoformat,
    datetime.datetime: isoformat,
    datetime.time: isoformat,
    datetime.timedelta: lambda td: td.total_seconds(),
    Decimal: decimal_encoder,
    Enum: lambda o: o.value,
    frozenset: list,
    deque: list,
    GeneratorType: list,
    IPv4Address: str,

		configLogIf(ctx, fmt.Errorf("Unable to initialize notification target(s): %w", err))
	}

	bootstrapTraceMsg("initialize the lambda targets")
	globalLambdaTargetList, err = lambda.FetchEnabledTargets(GlobalContext, s, transport)
	if err != nil {
		configLogIf(ctx, fmt.Errorf("Unable to initialize lambda target(s): %w", err))
	}

	bootstrapTraceMsg("applying the dynamic configuration")
	// Apply dynamic config values

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package lambda

import (
	"context"
	"errors"
	"fmt"
	"net/http"

	"github.com/minio/minio/internal/config"
	"github.com/minio/minio/internal/config/lambda/event"
	"github.com/minio/minio/internal/config/lambda/target"
	"github.com/minio/minio/internal/logger"
	"github.com/minio/pkg/v3/env"

    }

    @Test
    @DisplayName("Test lambda implementation (if applicable)")
    void testLambdaImplementation() {
        // Given - Using a functional interface pattern
        SmbNegotiationRequest lambdaRequest = () -> true;

        // When
        boolean result = lambdaRequest.isSigningEnforced();

        // Then
        assertTrue(result, "Lambda implementation should return true");
    }

    /**

    en_links = lang_links.get("en", [])
    en_links.sort(key=lambda x: x.preview_link)
    links.extend(en_links)

    langs = list(lang_links.keys())
    langs.sort()
    for lang in langs:
        if lang == "en":
            continue
        current_lang_links = lang_links[lang]
        current_lang_links.sort(key=lambda x: x.preview_link)
        links.extend(current_lang_links)

    encoded_instance = jsonable_encoder(
        instance, custom_encoder={safe_datetime: lambda o: o.strftime("%H:%M:%S")}
    )
    assert encoded_instance["dt_field"] == instance["dt_field"].strftime("%H:%M:%S")

    encoded_instance = jsonable_encoder(
        instance, custom_encoder={datetime: lambda o: o.strftime("%H:%M:%S")}
    )
    assert encoded_instance["dt_field"] == instance["dt_field"].strftime("%H:%M:%S")

import org.junit.jupiter.api.Test;
import org.mockito.Mockito;

/**
 * Tests for {@link SmbFilenameFilter}. Since the interface only defines
 * a single method, the tests simply ensure that the lambda expression
 * correctly implements the method and that any exception is propagated.
 */
class SmbFilenameFilterTest {

    @Test
    void acceptReturnsTrueWhenNameMatches() throws Exception {

from fastapi import FastAPI
from fastapi.testclient import TestClient
from pydantic import BaseModel, Field

app = FastAPI()


class ResponseModel(BaseModel):
    code: int = 200
    message: str = Field(default_factory=lambda: "Successful operation.")


@app.get(
    "/response_model_has_default_factory_return_dict",
    response_model=ResponseModel,
)
async def response_model_has_default_factory_return_dict():
    return {"code": 200}