new_contents: import matplotlib.pyplot as plt
  
  xvalues = []
  yvalues = []
  x = 1.12
  y = 0.09
  
  for i in range(10):
      xvalues.append(x)
      yvalues.append(y)
      print(x, y)
      x, y = y+1-1.4*x*x, 0.3*x
  
  plt.plot(xvalues, yvalues)
  plt.plot(xvalues, yvalues, 'bo')
  plt.show()
subject: Add Henon plot