code: def transpose_list_of_lists(lol):
      """Transpose a list of equally-sized python lists.
  
      Args:
        lol: a list of lists
      Returns:
        a list of lists
      """
      assert lol, "cannot pass the empty list"
      return [list(x) for x in zip(*lol)]
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import functools
  import math
  import six
  from six.moves import range
  from six.moves import zip
  from tensor2tensor.layers import common_layers
  from tensor2tensor.layers.vq_discrete import DiscreteBottleneck
  import tensorflow.compat.v1
label_desc: Use image node_id 15 for calling a global function with example usage: transpose_list_of_lists(lol) and returns: unknown