print out statistics every 10 seconds from idle loop

def idle_print_status(self):
        '''print out statistics every 10 seconds from idle loop'''
        now = time.time()
        if (now - self.last_idle_status_printed_time) >= 10:
            print (self.status())
            self.last_idle_status_printed_time = now
            self.prev_download = self.download