new_contents: #!/usr/bin/env python
  import vtk
  
  def main():
      colors = vtk.vtkNamedColors()
      g = vtk.vtkMutableUndirectedGraph()
      
      # Create 3 vertices
      v1 = g.AddVertex()
      v2 = g.AddVertex()
      v3 = g.AddVertex()
      
      # Create a fully connected graph
      g.AddEdge(v1, v2)
      g.AddEdge(v2, v3)
      g.AddEdge(v1, v3)
      
      # Create the edge weight array
      weights = vtk.vtkDoubleArray()
      weights.SetNumberOfComponents(1)
      weights.SetName("Weights")
      
      # Set the edge weights
      weights.InsertNextValue(1.0)
      weights.InsertNextValue(1.0)
      weights.InsertNextValue(2.0)
      
      # Create an array for the vertex labels
      vertexIDs = vtk.vtkIntArray()
      vertexIDs.SetNumberOfComponents(1)
      vertexIDs.SetName("VertexIDs")
      
      # Set the vertex labels
      vertexIDs.InsertNextValue(0)
      vertexIDs.InsertNextValue(1)
      vertexIDs.InsertNextValue(2)
      
      # Add the edge weight array to the graph
      g.GetEdgeData().AddArray(weights)
      g.GetVertexData().AddArray(vertexIDs)
      
      circularLayoutStrategy = vtk.vtkCircularLayoutStrategy()
      
      graphLayoutView = vtk.vtkGraphLayoutView()
      graphLayoutView.AddRepresentationFromInput(g)
      
      graphLayoutView.SetLayoutStrategy(circularLayoutStrategy)
      graphLayoutView.SetVertexLabelVisibility(1)
      graphLayoutView.SetEdgeLabelVisibility(1)
      graphLayoutView.SetEdgeLabelArrayName("Weights") #default is "labels"
      graphLayoutView.SetVertexLabelArrayName("VertexIDs") #default is "labels"
      graphLayoutView.ResetCamera()
      graphLayoutView.Render()
      graphLayoutView.GetInteractor().Start()
  
  if __name__ == '__main__':
      main()
  
subject: Create LabelVerticesAndEdges.py