new_contents: import numpy as np
  from matplotlib import pyplot as plt
  from matplotlib import animation
  from numpy.random import randn
  from matplotlib import cm
  from datetime import datetime as dt
  from Bedau.Evolution import Evolution
  # First set up the figure, the axis, and the plot element we want to animate
  
  
  #
  world_size = 128
  pop_size = 100
  mutation_rate = 0.01
  meta_mutation = 0.66
  meta_mutation_range = 0.0025  # from paper
  evol = Evolution(world_size=world_size, pop_size=pop_size, mutation_rate=mutation_rate,
                   meta_mutation=meta_mutation, meta_mutation_range=meta_mutation_range)
  evol.iterate(50)
  
  fig, ax = plt.subplots()
  ax = plt.axes(xlim=(0, 128), ylim=(0, 128))
  line1 = ax.imshow(evol.history[0][0], shape=(128, 128),
                    interpolation='nearest', cmap=cm.coolwarm)
  line2 = ax.scatter([], [], s=10, c='red')
  
  
  def init():
      line1.set_array([[], []])
      line2.set_offsets([])
      return line1, line2
  
  
  def animate(i):
      line1.set_array(evol.history[i][0])
      line2.set_offsets(evol.history[i][1])
      return line1, line2
  
  
  # call the animator.  blit=True means only re-draw the parts that have changed.
  anim = animation.FuncAnimation(
      fig, animate, frames=len(evol.history), interval=300, blit=True, init_func=init, repeat=False)
  
  # save the animation as an mp4.  This requires ffmpeg or mencoder to be
  # installed.  The extra_args ensure that the x264 codec is used, so that
  # the video can be embedded in html5.  You may need to adjust this for
  # your system: for more information, see
  # http://matplotlib.sourceforge.net/api/animation_api.html
  #anim.save('basic_animation.mp4', fps=2, extra_args=['-vcodec', 'libx264'])
  
  name = dt.now().strftime('%Y-%m-%d_%H-%M') + '.mp4'
  anim.save(name, fps=5, dpi=300, extra_args=['-vcodec', 'libx264'])
  
  # lt.show()
  
subject: Add file to experiment with plotting of world