from wgpu.gui.auto import WgpuCanvas, run
import pygfx as gfx

canvas = WgpuCanvas()
renderer = gfx.renderers.WgpuRenderer(canvas)
scene = gfx.Scene()

geometry = gfx.klein_bottle_geometry(10, stitch=False)
geometry.texcoords = None
material = gfx.MeshPhongMaterial(color=(1, 0.5, 0, 1), flat_shading=True)
obj = gfx.Mesh(geometry, material)
scene.add(obj)

camera = gfx.PerspectiveCamera(70, 1)
camera.show_object(obj)

scene.add(gfx.AmbientLight(), camera.add(gfx.DirectionalLight()))


def draw():
    renderer.render(scene, camera)
    canvas.request_draw()


controller = gfx.OrbitController(camera, register_events=renderer)
print(controller.cameras)


if __name__ == "__main__":
    canvas.request_draw(draw)
    run()

Traceback (most recent call last):
  File "/home/kushal/repos/pygfx/examples/feature_demo/geometry_klein_bottle.py", line 39, in <module>
    print(controller.cameras)
          ^^^^^^^^^^^^^^^^^^
  File "/home/kushal/repos/pygfx/pygfx/controllers/_base.py", line 93, in cameras
    return tuple(cam for cam, _ in self._cameras)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/kushal/repos/pygfx/pygfx/controllers/_base.py", line 93, in <genexpr>
    return tuple(cam for cam, _ in self._cameras)
                         ^^^^^^
ValueError: too many values to unpack (expected 2)