# -*- coding: utf-8 -*-
import time
def timestamp_datetime(value):
 format = '%Y-%m-%d %H:%M:%S'
 # value为传入的值为时间戳(整形)，如：1332888820
 value = time.localtime(value)
 ## 经过localtime转换后变成
 ## time.struct_time(tm_year=2012, tm_mon=3, tm_mday=28, tm_hour=6, tm_min=53, tm_sec=40, tm_wday=2, tm_yday=88, tm_isdst=0)
 # 最后再经过strftime函数转换为正常日期格式。
 dt = time.strftime(format, value)
 return dt
def datetime_timestamp(dt):
  #dt为字符串
  #中间过程，一般都需要将字符串转化为时间数组
  time.strptime(dt, '%Y-%m-%d %H:%M:%S')
  ## time.struct_time(tm_year=2012, tm_mon=3, tm_mday=28, tm_hour=6, tm_min=53, tm_sec=40, tm_wday=2, tm_yday=88, tm_isdst=-1)
  #将"2012-03-28 06:53:40"转化为时间戳
  s = time.mktime(time.strptime(dt, '%Y-%m-%d %H:%M:%S'))
  return int(s)
if __name__ == '__main__':
 d = datetime_timestamp('2012-03-28 06:53:40')
 print d
 s = timestamp_datetime(1332888820)
 print s