方法一:

    1. class Date:
    2.     def __init__(self, year, month, day):
    3.         self.year = year
    4.         self.month = month
    5.         self.day = day
    8. d = Date.__new__(Date)
    9. print(d)
    11. data = {'year': 2012, 'month': 12, 'day': 21}
    12. for key, value in data.items():
    13.     setattr(d, key, value)
    15. print(d.year)

    方法二:

    1. from time import localtime
    4. class Date2:
    5.     def __init__(self, year, month, day):
    6.         self.year = year
    7.         self.month = month
    8.         self.day = day
    10.     @classmethod
    11.     def today(cls):
    12.         d = cls.__new__(cls)
    13.         t = localtime()
    14.         d.year = t.tm_year
    15.         d.month = t.tm_mon
    16.         d.day = t.tm_mday
    17.         return d
    20. print(Date2.today().year)