def dar_masa(): channel = init_channel() rfid = RFID(channel) fan = FanCoolers(channel) fan.set_speed(0) tags = rfid.get_tags() serial_number = tags[0]['serial_number'][0] todo_bien = True tag = get_tag() while todo_bien: rfid.write_tag(array_to_string(serial_number), 4, TOKEN, tag) rfid_data = rfid.get_tag_data(serial_number) todo_bien = rfid_data is not None