date.py

python的典型方法,对初学的python的人有一定的借鉴作用。

from datetime import date
from time import time

class Date(object):
    def __init__(self, time):
        self.time = time
        d = date.fromtimestamp(time)
        self.m = d.month
        self.d = d.day
        self.y = d.year

    def update(self, time):
        self.time = time
        d = date.fromtimestamp(time)
        self.m = d.month
        self.d = d.day
        self.y = d.year
    
    def display(self, fmt='MDYY'):
        '''Formats are :
            'MDYY', 'MDY', 'DMY', 'DMYY', 'MoDYY'
        '''
        formats = {
        'MDYY':  "%02d/%02d/%04d" % (self.m, self.d, self.y),
        'MDY' :  "%02d/%02d/%02d" % (self.m, self.d, self.y%100),
        'DMY' :  "%02d/%02d/%02d" % (self.d, self.m, self.y%100),
        'DMYY':  "%02d/%02d/%04d" % (self.d, self.m, self.y)
        }
        if fmt in formats:
            print formats[fmt]
            return
        months = ('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
                  'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec')
        if fmt == 'MoDYY':
            print '%s %02d, %04d' % (months[self.m-1], self.d, self.y)

tday = Date(time())
tday.display('MoDYY')

s = Date(807300890)
fmts = ('MDYY', 'MDY', 'DMY', 'DMYY', 'MoDYY')
for fmt in fmts:
    s.display(fmt)