code: def _unpack_v1(h5file):
      '''Unpack groups from HDF5 v1 file'''
      points = np.array(h5file['points'])
      groups = np.array(h5file['structure'])
      return points, groupf _unpack_v1(h5file):
      '''Unpack groups from HDF5 v1 file'''
      points = np.array(h5file['points'])
      groups = np.array(h5file['structure'])
      return points, groups
docs: Unpack groups from HDF5 v1 file