code: def test_add_nodes_from(self):
      G = self.G()
      G.add_nodes_from(list("ABCDEFGHIJKL"))
      assert G.has_node("L")
      G.remove_nodes_from(["H", "I", "J", "K", "L"])
      G.add_nodes_from([1, 2, 3, 4])
      assert sorted(G.nodes(), key=str) == [
          1,
          2,
          3,
          4,
          "A",
          "B",
          "C",
          "D",
          "E",
          "F",
          "G",
      ]
      # test __iter__
      assert sorted(G, key=str) == [
          1,
          2,
          3,
          4,
          "A",
          "B",
          "C",
          "D",
          "E",
          "F",
          "G",
      ]
  
imports: import pytest
  import networkx
  from networkx import convert_node_labels_to_integers
  from networkx.utils import edges_equal, nodes_equal
label_desc: Use image node_id 5 for calling the HistoricalTests obj's underlying member method code with example usage: obj.test_add_nodes_from() without return types