code: def _partitions_list(N):
      
      if N < (_NUM_PRECOMPUTED_PARTITION_LISTS):
          return list(_partition_lists[N])
      else:
          raise ValueError(
              'Partition lists not yet available for system with {} '
              'nodes or more'.format(_NUM_PRECOMPUTED_PARTITION_LISTS))
docs: Return a list of partitions of the |N| binary nodes.
  
      Args:
          N (int): The number of nodes under consideration.
  
      Returns:
          list[list]: A list of lists, where each inner list is the set of
          micro-elements corresponding to a macro-element.
  
      Example:
          >>> _partitions_list(3)
          [[[0, 1], [2]], [[0, 2], [1]], [[0], [1, 2]], [[0], [1], [2]]]