def render_devices(self):
    for frame in self.devices:
        frame.pack_forget()
    self.settings.load_devices()
    for (serial_number, data) in self.settings.devices.items():
        self.build_device(serial_number, data)
def render_devices(self):
    for frame in self.devices:
        frame.pack_forget()
    self.settings.load_devices()
    for (serial_number, data) in self.settings.devices.items():
        self.build_device(serial_number, data)