text: 
  import networkx as nx
  import matplotlib.pyplot as plt
  
  # Graph from "Creating networks" recipe
  G = nx.Graph()
  
  G.add_nodes_from(range(1, 7))
  G.add_edges_from([
      (1, 2), (2, 3), (3, 4), (3, 5), 
      (3, 6), (4, 5), (5, 6)
  ])
  
  fig, ax = plt.subplots()
  
  layout = nx.shell_layout(G)
  
  nx.draw(G, ax=ax, pos=layout, with_labels=True)
  ax.set_title("Simple network drawing")
  
  
  plt.show()
  