import sys
import os
from time import time, sleep
from sched import scheduler

try:
   wall_folder = "./"
   rkey = open("wnum", "r")
   skey = int(rkey.read())
   rkey.close()
except:
   skey = 0
def setwall(directory, key):
   file = []
   for (a, b, flist) in os.walk(directory):
      for file in flist:
         if str(key)+".jpg"== file:
            os.popen("pcmanfm --set-wallpaper " + directory + str(key) + ".jpg")
            find = "ok"
            break
         else:
            find = "no"
      if find == "no":
         time_set(wall_folder, 0)
      else:
         a = open("wnum", "w")
         a.write(str(key))
         a.close()

def time_set(wall_folder, skey):
   sch = scheduler(timefunc=time, delayfunc=sleep)
   sch.enter(3600, 0,setwall , (wall_folder, skey+1))
   sch.run()
   time_set(wall_folder, skey + 1)

time_set(wall_folder, skey)