timefold - constraint involving Python datetime set - Stack Overflow

I get the error:

TypeError: '>' not supported between instances of 'ai.timefold.jpyinterpreter.types.datetime.PythonDate' and 'datetime.date'

When using this constraint:

def teacher_soft(constraint_factory: ConstraintFactory):
    return constraint_factory.for_each(Exam) \
            .filter(
                lambda e: 
                    e.teacher != None and
                    e.timeslot and (
                        _search("Doe",exam.teacher)!=None and (
                            exam.timeslot.start_time.date() > datetime.date(2025,2,10) 
                            )
-- ...

Where e is part of the PlanningEntity.

I had a similar error with str comparisons, which I could resolve by enforcing str(x) on PythonString, however, this seems to be more complicated.

How can I get this constraint to work without resorting to desperate measures, like, e.g., creating my own PythonDateTimeSet class?

The domain structures are basically defined as follows:

class Timeslot:  
    id : Annotated[int, PlanningId]
    start_time : datetime.datetime
    end_time : datetime.datetime
    grain:datetime.timedelta = datetime.timedelta(hours=2)
    time_max=datetime.time.max
...
@planning_entity
class Exam:
    id: Annotated[int,PlanningId]
    subject: str
    teacher: str
    participants: int
    pinned : Annotated[bool, PlanningPin]
    timeslot : Annotated[Timeslot | None, 
                        PlanningVariable]

This is the code that is ported from OptaPy. However, the Java-Python layer seems to have changed substantially with Timefold.