如何处理python UNIX_TIMESTAMP时间？

from datetime import datetime
import time
int(time.mktime(rm.start_time.timetuple()))
 datetime.fromtimestamp(time.time())
rf.start_time + timedelta(0, math.ceil(diff.total_seconds()/(3600*rf.period))*3600*rf.period)

def getlastday(datetimeobj):
 year= datetimeobj.year
 month = datetimeobj.month + 1
 if month>12:
 year = year + 1
 month=1
 return datetime(year, month, 1) - timedelta(1)
def getSendTime(period, start_time):
 datenow = datetime.now()
 nextTime = preTime = start_time
 if period > 0 and period < 1000:
 diff = datetime.now() - start_time
 nextTime = start_time + timedelta(0, math.ceil(diff.total_seconds()/(3600*period))*3600*period)
 preTime = start_time + timedelta(0, math.floor(diff.total_seconds()/(3600*period))*3600*period)
 if period == 1001:
 if datenow.day>start_time.day:
  preTime = datetime(datenow.year, datenow.month, start_time.day)
  nextTime = getlastday(getlastday(datenow)+timedelta(1))
  if nextTime.day > start_time.day:
  nextTime = datetime(nextTime.year, nextTime.month, start_time.day)
 else:
  preTime = getlastday(datetime(datenow.year, datenow.month, 1) - timedelta(1))
  if preTime.day > start_time.day:
  preTime = datetime(preTime.year, preTime.month, start_time.day)
  nextTime = getlastday(datenow)
  if nextTime.day > start_time.day:
  nextTime = datetime(nextTime.year, nextTime.month, start_time.day)
 return preTime, nextTime

reportMetaPeriodInfo.sort(lambda p1, p2:cmp(p1['k'], p2['k']))

import socket
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
 s.connect(('8.8.8.8', 0))
 localIP=s.getsockname()[0]