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'''
Created on 2009-9-2
@author: jiangqh
'''
import time,datetime
# date to str
print time.strftime("%Y-%m-%d %X", time.localtime())
#str to date
t = time.strptime("2009 - 08 - 08", "%Y - %m - %d")
y,m,d = t[0:3]
print datetime.datetime(y,m,d)

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2009-09-02 23:51:01
2009-08-08 00:00:00
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%a Ó¢ÎÄÐÇÆÚ¼òд
%A Ó¢ÎÄÐÇÆÚµÄÍêÈ«
%b Ó¢ÎÄÔ·ݵļòд
%B Ó¢ÎÄÔ·ݵÄÍêÈ«
%c ÏÔʾ±¾µØÈÕÆÚʱ¼ä
%d ÈÕÆÚ£¬È¡1-31
%H Сʱ£¬ 0-23
%I Сʱ£¬ 0-12
%m Ô£¬ 01 -12
%M ·ÖÖÓ£¬1-59
%j ÄêÖе±ÌìµÄÌìÊý
%w ÏÔʾ½ñÌìÊÇÐÇÆÚ¼¸
%W µÚ¼¸ÖÜ
%x µ±ÌìÈÕÆÚ
%X ±¾µØµÄµ±Ììʱ¼ä
%y Äê·Ý 00-99¼ä
%Y Äê·ÝµÄÍêÕûƴд


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'''
Created on 2009-9-2
@author: jiangqh
'''
# file create and write
context = '''hello world
hello china '''
f = file("hello.txt",'w')
f.write(context)
f.close()
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f = o ......
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