util.py 文件源码

def date(self):
        """
        Return a built-in datetime.date for Dates falling in the years [datetime.MINYEAR, datetime.MAXYEAR]

        ValueError is raised for Dates outside this range.
        """
        try:
            dt = datetime_from_timestamp(self.seconds)
            return datetime.date(dt.year, dt.month, dt.day)
        except Exception:
            raise ValueError("%r exceeds ranges for built-in datetime.date" % self)