Method __new__

tools/python-3.11.9-amd64/Lib/datetime.py:1282–1283

(cls, year, week, weekday, /)

class IsoCalendarDate(tuple):

    def __new__(cls, year, week, weekday, /):
        return super().__new__(cls, (year, week, weekday))

    @property
    def year(self):