Any response type for Respose.serializer()

[peterschutt]

Response.serializer() passed to orjson.dumps() in Response.render():

    def render(self, content: Any) -> bytes:
        """Renders content into bytes"""
        try:
            if self.media_type == MediaType.JSON:
                return dumps(content, default=self.serializer, option=OPT_SERIALIZE_NUMPY | OPT_OMIT_MICROSECONDS)

Response.serializer() return type is dict[str, Any] but should be Any as overriding serializer() is the way to extend orjson for any type. Currently I need a #type: ignore for a subclass:

class Response(_Response):
    @staticmethod
    def serializer(value: Any) -> Any:  # type:ignore[override]
        if isinstance(value, pgproto.UUID):
            return str(value)
        return _Response.serializer(value)

Otherwise mypy gives us:

src/app/core/response.py:8: error: Signature of "serializer" incompatible with supertype "Response"  [override]
src/app/core/response.py:8: note:      Superclass:
src/app/core/response.py:8: note:          def serializer(value: Any) -> Dict[str, Any]
src/app/core/response.py:8: note:      Subclass:
src/app/core/response.py:8: note:          def serializer(value) -> Any

[Goldziher]

fair enough, also wouldn't affect existing users negatively so go ahead.

[peterschutt]

I'm not getting the error now, so perhaps an xy problem. I'll reopen if I come across it again.