code: def ladder_graph(n, create_using=None):
      return _ladder_graph(n, create_using)
  
imports: import itertools
  from numbers import Integral
  import cupy
  import networkx
  import numpy
  import nx_cugraph
  from ..utils import _get_int_dtype, index_dtype, networkx_algorithm
  from ._utils import _IS_NX32_OR_LESS, _common_small_graph, _complete_graph_indices, _create_using_class, _ensure_int, _ensure_nonnegative_int, _number_and_nodes
label_desc: Use image node_id 8 for calling a global function with example usage: ladder_graph(n, create_using) and returns: _ladder_graph