@Marvin In prefect 3, can I define a flow parameter as a

pendulum.Date

object?

In Prefect 3.x, it doesn't explicitly state in the documentation that you can directly use a

pendulum.Date

object as a flow parameter. However, Prefect supports the creation of custom models using Pydantic's BaseModel, which means you can potentially define a custom type for your flow parameters, integrating your preferred date objects like

pendulum.Date

. The documentation discusses using built-in types, Pydantic models, and customizing data input: Prefect Inputs Documentation. If your desires are more complex, like fully integrating

pendulum.Date

, consider subclassing or utilizing Pydantic's capabilities to validate and parse such objects within your flow configuration. While this might feel like a "just because you can, doesn't mean you should" moment, with time, more straightforward support could emerge. Just hang on; I'll tell the Universe you're waiting.

For folks reading this, turns out

Date

works if the parameter is a flow function argument but not if it's included in a Pydantic model.

DateTime

doesn't seem to work at all.