text: # This program displays a simple line graph.
  import matplotlib.pyplot as plt
  
  def main():
      # Create lists with the X and Y coordinates of each data point.
      x_coords = [0, 1, 2, 3, 4]
      y_coords = [0, 3, 1, 5, 2]
  
      # Build the line graph.
      plt.plot(x_coords, y_coords)
  
      # Display the line graph.
      plt.show()
  
  # Call the main function.
  main()
  