code: def test_read_edgelist_no_data(data, extra_kwargs):
      bytesIO = io.BytesIO(data.encode("utf-8"))
      G = nx.read_edgelist(
          bytesIO, nodetype=int, data=False, **extra_kwargs
      )
      assert edges_equal(G.edges(), [(1, 2), (2, 3)])
  
imports: import io
  import textwrap
  import pytest
  import networkx
  from networkx.utils import edges_equal, graphs_equal, nodes_equal
label_desc: Use image node_id 1 for calling a global function with example usage: test_read_edgelist_no_data(data, extra_kwargs) without return types