Bug: Cannot provide examples of values other than str in the Schema examples for SwaggerUI

[tonsho]

Expected Behavior

examples field can reflect examples with float, int, and bool values in SwaggerUI.

class Todo(BaseModel):
    userId: int = Field(examples=[1])
    id_: int = Field(alias="id")
    title: str = Field(examples=["title 1"])
    completed: bool = Field(examples=[True])

↓

"Todo": {
  "properties": {
    "userId": {
      "type": "integer",
      "title": "Userid",
      "examples": [
        1
      ]
    },
    "id": {
      "type": "integer",
      "title": "Id"
    },
    "title": {
      "type": "string",
      "title": "Title",
      "examples": [
        "title 1"
      ]
    },
    "completed": {
      "type": "boolean",
      "title": "Completed",
      "examples": [
        true
      ]
    }
  },
  "type": "object",
  "required": [
    "userId",
    "id",
    "title",
    "completed"
  ],
  "title": "Todo"
},

Current Behaviour

ValidationError occurs in api_gateway.py.

Code snippet

from typing import List

import requests
from aws_lambda_powertools.event_handler import APIGatewayRestResolver
from aws_lambda_powertools.utilities.typing import LambdaContext
from pydantic import BaseModel, Field

app = APIGatewayRestResolver(enable_validation=True)
app.enable_swagger(path="/swagger")  # (1)!


class Todo(BaseModel):
    userId: int = Field(examples=[1])
    id_: int = Field(alias="id")
    title: str = Field(examples=["title 1"])
    completed: bool = Field(examples=[True])


@app.post("/todos")
def create_todo(todo: Todo) -> str:
    response = requests.post("https://jsonplaceholder.typicode.com/todos", json=todo.dict(by_alias=True))
    response.raise_for_status()

    return response.json()["id"]


@app.get("/todos")
def get_todos() -> List[Todo]:
    todo = requests.get("https://jsonplaceholder.typicode.com/todos")
    todo.raise_for_status()

    return todo.json()


def lambda_handler(event: dict, context: LambdaContext) -> dict:
    return app.resolve(event, context)


if __name__ == "__main__":
    print(app.get_openapi_json_schema())

Possible Solution

Allow float, int, and bool values in the examples field.
https://github.com/aws-powertools/powertools-lambda-python/blob/v3.3.0/aws_lambda_powertools/event_handler/openapi/models.py#L204

    examples: Optional[Union[List["Example"], List[str], List[float], List[int], List[bool]]] = None

Steps to Reproduce

Run python.

Powertools for AWS Lambda (Python) version

latest

AWS Lambda function runtime

3.12

Packaging format used

PyPi

Debugging logs

$ python enabling_swagger.py
Traceback (most recent call last):
  File "/home/ec2-user/environment/PowertoolsSample/src/enabling_swagger.py", line 40, in <module>
    print(app.get_openapi_json_schema())
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ec2-user/environment/PowertoolsSample/.venv/lib/python3.12/site-packages/aws_lambda_powertools/event_handler/api_gateway.py", line 1763, in get_openapi_json_schema
    self.get_openapi_schema(
  File "/home/ec2-user/environment/PowertoolsSample/.venv/lib/python3.12/site-packages/aws_lambda_powertools/event_handler/api_gateway.py", line 1668, in get_openapi_schema
    return OpenAPI(**output)
           ^^^^^^^^^^^^^^^^^
  File "/home/ec2-user/environment/PowertoolsSample/.venv/lib/python3.12/site-packages/pydantic/main.py", line 212, in __init__
    validated_self = self.__pydantic_validator__.validate_python(data, self_instance=self)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
pydantic_core._pydantic_core.ValidationError: 7 validation errors for OpenAPI
components.schemas.Todo.Schema.properties.userId.Schema.examples.list[Example].0
  Input should be a valid dictionary or instance of Example [type=model_type, input_value=1, input_type=int]
    For further information visit https://errors.pydantic.dev/2.9/v/model_type
components.schemas.Todo.Schema.properties.userId.Schema.examples.list[str].0
  Input should be a valid string [type=string_type, input_value=1, input_type=int]
    For further information visit https://errors.pydantic.dev/2.9/v/string_type
components.schemas.Todo.Schema.properties.userId.bool
  Input should be a valid boolean [type=bool_type, input_value={'examples': [1], 'title'...rid', 'type': 'integer'}, input_type=dict]
    For further information visit https://errors.pydantic.dev/2.9/v/bool_type
components.schemas.Todo.Schema.properties.completed.Schema.examples.list[Example].0
  Input should be a valid dictionary or instance of Example [type=model_type, input_value=True, input_type=bool]
    For further information visit https://errors.pydantic.dev/2.9/v/model_type
components.schemas.Todo.Schema.properties.completed.Schema.examples.list[str].0
  Input should be a valid string [type=string_type, input_value=True, input_type=bool]
    For further information visit https://errors.pydantic.dev/2.9/v/string_type
components.schemas.Todo.Schema.properties.completed.bool
  Input should be a valid boolean [type=bool_type, input_value={'examples': [True], 'tit...ted', 'type': 'boolean'}, input_type=dict]
    For further information visit https://errors.pydantic.dev/2.9/v/bool_type
components.schemas.Todo.Reference.$ref
  Field required [type=missing, input_value={'properties': {'userId':...Todo', 'type': 'object'}, input_type=dict]
    For further information visit https://errors.pydantic.dev/2.9/v/missing

[boring-cyborg]

Thanks for opening your first issue here! We'll come back to you as soon as we can.
In the meantime, check out the #python channel on our Powertools for AWS Lambda Discord: Invite link

[leandrodamascena]

Hi @tonsho! Thanks for opening this issue, to be honest, this should be Any to accept any type of field. It can be basically anything that Pydantic can serialize: int, float, str, bool, dataclass, pydantic model or any other primitive.

Do you want to submit a PR to fix this? If so, please just add a test to validate this.

Thanks

[tonsho]

Submitted #5575