code: def test_from_edgelist_no_attr(self):
      Gtrue = nx.Graph([("E", "C", {}), ("B", "A", {}), ("A", "D", {})])
      G = nx.from_pandas_edgelist(self.df, 0, "b")
      assert graphs_equal(G, Gtrue)
  
imports: import pytest
  import networkx
  from networkx.utils import edges_equal, graphs_equal, nodes_equal
label_desc: Use image node_id 10 for calling the TestConvertPandas obj's underlying member method code with example usage: obj.test_from_edgelist_no_attr() without return types