Python 日期格式化 及 schwartzian排序

__author__ = 'root'

import datetime

import time

import copy





# 12/Dec/2012:23:59:50

# 12/Sep/2012:23:58:50

# 11/Sep/2012:23:59:50

# 19/Sep/2012:23:58:50

def getTime(dtstr):

    print dtstr

    time = datetime.datetime.strptime(dtstr, '%d/%b/%Y:%H:%M:%S')

    return time.strftime('%Y%m%d%H%M%S')



lines = open('datefmt.txt').readlines()

lines = [i.strip() for i in lines]

line_copy = copy.copy(lines)

lines = [getTime(line) for line in lines]

lines.sort()

for line in lines:

    print line



line_copy.sort()

for item in line_copy:

    print item

12/Dec/2012:23:59:50

12/Sep/2012:23:58:50

11/Sep/2012:23:59:50

19/Sep/2012:23:58:50

20120911235950

20120912235850

20120919235850

20121212235950

11/Sep/2012:23:59:50

12/Dec/2012:23:59:50

12/Sep/2012:23:58:50

19/Sep/2012:23:58:50