详解python 字符串和日期之间转换 StringAndDate

''''' 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