text: """Make a simple plot using pyplot."""
  
  import matplotlib.pyplot as plt
  
  
  def create_graph():
      """Create graph using matplotlib.pyplot."""
      x_numbers = [1, 2, 3]
      y_numbers = [4, 5, 6]
  
      plt.plot(x_numbers, y_numbers)
      plt.show()
  
  if __name__ == '__main__':
      create_graph()
  