Unable to load a standard mitsuba scene

[Pulkit gera]

I am trying to load cornell-box scene from https://benedikt-bitterli.me/resources/. However, on downloading and passing scene.xml, i get the following error -

AssertionError                            Traceback (most recent call last)

<ipython-input-15-421334ad5683> in <module>()
      1 # print(os.listdir('.'))
----> 2 pyredner.load_mitsuba('cornell-box/scene.xml')

2 frames

/usr/local/lib/python3.6/dist-packages/pyredner/load_mitsuba.py in load_mitsuba(filename, device)
    486     cwd = os.getcwd()
    487     os.chdir(os.path.dirname(filename))
--> 488     ret = parse_scene(root, device)
    489     os.chdir(cwd)
    490     return ret

/usr/local/lib/python3.6/dist-packages/pyredner/load_mitsuba.py in parse_scene(node, device)
    426     for child in node:
    427         if child.tag == 'sensor':
--> 428             cam = parse_camera(child)
    429         elif child.tag == 'bsdf':
    430             node_id, material = parse_material(child, device)

/usr/local/lib/python3.6/dist-packages/pyredner/load_mitsuba.py in parse_camera(node)
     89                 if not has_lookat:
     90                     print('Unsupported Mitsuba scene format: please use a look at transform')
---> 91                     assert(False)
     92         if child.tag == 'film':
     93             for grandchild in child:

[Pulkit gera]

@BachiLi

[Tzu-Mao Li]

i didn't bother to parse arbitrary camera transform -- it shouldn't be too difficult to add this, contributions are welcome