android - QPython3 background task fails When screen go off -


i have written program via python witch loads url multiple times , works on pc. when i'm using qpython3 on android launch script, fails when screen off. please me solution. below code:

import urllib.request, time, sys    urllib.error  import httperror    datetime      import datetime, date, timedelta  ncnt = 0  while ( ncnt < 8192 ) :  ncnt = ncnt + 1  try :     response = urllib.request.urlopen(my_url)     htmlbytes = response.read()     response.close() except httperror e :     print        ('')     if e.code == 404 :         print        ( '404 error [%s]' % (my_url) )     else :         print        ( 'urlopen error httperror code : %d [%s]' % ( e.code, my_url) )     sys.exit()  print (time.strftime('%m/%d %h:%m:%s'), end=' ')  time.sleep(600)


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