code: def ematch(e1, e2):
      return e1 == e2
  
imports: import pytest
  import networkx
  from networkx.algorithms.similarity import graph_edit_distance, optimal_edit_paths, optimize_graph_edit_distance
  from networkx.generators.classic import circular_ladder_graph, cycle_graph, path_graph, wheel_graph
label_desc: Use image node_id 2 for calling a global function with example usage: ematch(e1, e2) and returns: unknown