code: def build(self):
      self.nm = iso.categorical_node_match("color", "")
      self.em = iso.numerical_edge_match("weight", 1)
  
      self.g1.add_node("A", color="red")
      self.g2.add_node("C", color="blue")
  
      self.g1.add_edge("A", "B", weight=1)
      self.g2.add_edge("C", "D", weight=1)
  
imports: import math
  from operator import eq
  import networkx
  import networkx.algorithms.isomorphism
label_desc: Use image node_id 2 for calling the TestNodeMatch_Graph obj's underlying member method code with example usage: obj.build() without return types