def start()

in lerobot/common/teleoperators/gamepad/gamepad_utils.py [0:0]
56 lines of code
20 McCabe index (conditional complexity)

    def start(self):
        """Start the keyboard listener."""
        from pynput import keyboard

        def on_press(key):
            try:
                if key == keyboard.Key.up:
                    self.key_states["forward_x"] = True
                elif key == keyboard.Key.down:
                    self.key_states["backward_x"] = True
                elif key == keyboard.Key.left:
                    self.key_states["forward_y"] = True
                elif key == keyboard.Key.right:
                    self.key_states["backward_y"] = True
                elif key == keyboard.Key.shift:
                    self.key_states["backward_z"] = True
                elif key == keyboard.Key.shift_r:
                    self.key_states["forward_z"] = True
                elif key == keyboard.Key.esc:
                    self.key_states["quit"] = True
                    self.running = False
                    return False
                elif key == keyboard.Key.enter:
                    self.key_states["success"] = True
                    self.episode_end_status = "success"
                elif key == keyboard.Key.backspace:
                    self.key_states["failure"] = True
                    self.episode_end_status = "failure"
            except AttributeError:
                pass

        def on_release(key):
            try:
                if key == keyboard.Key.up:
                    self.key_states["forward_x"] = False
                elif key == keyboard.Key.down:
                    self.key_states["backward_x"] = False
                elif key == keyboard.Key.left:
                    self.key_states["forward_y"] = False
                elif key == keyboard.Key.right:
                    self.key_states["backward_y"] = False
                elif key == keyboard.Key.shift:
                    self.key_states["backward_z"] = False
                elif key == keyboard.Key.shift_r:
                    self.key_states["forward_z"] = False
                elif key == keyboard.Key.enter:
                    self.key_states["success"] = False
                elif key == keyboard.Key.backspace:
                    self.key_states["failure"] = False
            except AttributeError:
                pass

        self.listener = keyboard.Listener(on_press=on_press, on_release=on_release)
        self.listener.start()

        print("Keyboard controls:")
        print("  Arrow keys: Move in X-Y plane")
        print("  Shift and Shift_R: Move in Z axis")
        print("  Enter: End episode with SUCCESS")
        print("  Backspace: End episode with FAILURE")
        print("  ESC: Exit")