def __new__(cls, year, month=None, day=None):
        """Constructor.

        Arguments:

        year, month, day (required, base 1)
        """
        if (isinstance(year, bytes) and len(year) == 4 and
            1 <= year[2] <= 12 and month is None):  # Month is sane
            # Pickle support
            self = object.__new__(cls)
            self.__setstate(year)
            return self
        _check_date_fields(year, month, day)
        self = object.__new__(cls)
        self._year = year
        self._month = month
        self._day = day
        return self
def __new__ ( cls , year , month = None , day = None ) : if ( isinstance ( year , bytes ) and len ( year ) == 4 and 1 <= year [ 2 ] <= 12 and month is None ) : self = object . __new__ ( cls ) self . __setstate ( year ) return self _check_date_fields ( year , month , day ) self = object . __new__ ( cls ) self . _year = year self . _month = month self . _day = day return self
Constructor.

        Arguments:

        year, month, day (required, base 1)