Class Interval

src/pendulum/interval.py:36–420

An interval of time between two datetimes.

class Interval(Duration, Generic[_T]):
    """
    An interval of time between two datetimes.
    """

    def __new__(cls, start: _T, end: _T, absolute: bool = False) -> Self:
        if (isinstance(start, datetime) and not isinstance(end, datetime)) or (
            not isinstance(start, datetime) and isinstance(end, datetime)
        ):
            raise ValueError(
                "Both start and end of an Interval must have the same type"
            )

        if (
            isinstance(start, datetime)
            and isinstance(end, datetime)
            and (
                (start.tzinfo is None and end.tzinfo is not None)
                or (start.tzinfo is not None and end.tzinfo is None)
            )
        ):
            raise TypeError("can't compare offset-naive and offset-aware datetimes")

        if absolute and start > end:
            end, start = start, end

        _start = start
        _end = end
        if isinstance(start, pendulum.DateTime):
            _start = cast(
                "_T",
                datetime(
                    start.year,
                    start.month,
                    start.day,
                    start.hour,
                    start.minute,
                    start.second,
                    start.microsecond,
                    tzinfo=start.tzinfo,
                    fold=start.fold,
                ),
            )
        elif isinstance(start, pendulum.Date):
            _start = cast("_T", date(start.year, start.month, start.day))

        if isinstance(end, pendulum.DateTime):
            _end = cast(
                "_T",
                datetime(
                    end.year,
                    end.month,
                    end.day,
                    end.hour,
                    end.minute,
                    end.second,
                    end.microsecond,
                    tzinfo=end.tzinfo,