code: def test_custom_graph1_different_labels(self):
      G1 = nx.Graph()
  
      mapped = {1: "A", 2: "B", 3: "C", 4: "D", 5: "Z", 6: "E"}
      edges1 = [
          (1, 2),
          (1, 3),
          (1, 4),
          (2, 3),
          (2, 6),
          (3, 4),
          (5, 1),
          (5, 2),
      ]
  
      G1.add_edges_from(edges1)
      G2 = nx.relabel_nodes(G1, mapped)
      nx.set_node_attributes(
          G1, dict(zip(G1, it.cycle(labels_many))), "label"
      )
      nx.set_node_attributes(
          G2,
          dict(zip([mapped[n] for n in G1], it.cycle(labels_many))),
          "label",
      )
      assert vf2pp_isomorphism(G1, G2, node_label="label") == mapped
  
imports: import itertools
  import pytest
  import networkx
  from networkx import vf2pp_is_isomorphic, vf2pp_isomorphism
label_desc: Use image node_id 2 for calling the TestGraphISOVF2pp obj's underlying member method code with example usage: obj.test_custom_graph1_different_labels() without return types