【python】time,datetime,string相互转换

'''''
Created on 2013-7-25

@author: Administrator
'''
from datetime import datetime
class StringAndDate(object):

''''' String to Date(datetime) or date to string '''

def stringToDate(self,string):
#example '2013-07-22 09:44:15+00:00'
dt = datetime.strptime(string, "%Y-%m-%d %H:%M:%S+00:00")
#print dt
return dt

''''' Date(datetime) to String '''

def dateToString(self,date):
ds = date.strftime('%Y-%m-%d %H:%M:%S')
return ds

''''' return n hours after datetime '''

def getAfterDate(self,n):
dnow = datetime.datetime.now()
dafter = dnow + datetime.timedelta(hours=n)
#dafter.ctime()
return dafter