arcgis python 更新日期为随机数

#coding:UTF-8
import time
import random
import re

# 根据时间返回，返回随机年月日时间
def getRandomDate(sYear, sMonth, sDay, eYear, eMonth, eDay):
    a1=(sYear,sMonth,sDay,0,0,0,0,0,0)
    a2=(eYear,eMonth,eDay,23,59,59,0,0,0)
    start=time.mktime(a1)
    end=time.mktime(a2)
    t=random.randint(start,end)
    date_touple=time.localtime(t)
    date=time.strftime("%Y/%m/%d",date_touple)
    return date