import datetime import decimal from typing import overload class Duration: months: decimal.Decimal years: decimal.Decimal tdelta: datetime.timedelta def __init__( self, days: int, seconds: int, microseconds: int, milliseconds: int, minutes: int, hours: int, weeks: int, months: int | decimal.Decimal, years: int | decimal.Decimal, ) -> None: ... @overload def __add__(self, other: datetime.datetime) -> datetime.datetime: ... @overload def __add__(self, other: datetime.timedelta) -> Duration: ... @overload def __add__(self, other: Duration) -> Duration: ... __radd__ = __add__