text: import matplotlib.pyplot as plt
  import matplotlib
  matplotlib.use('Agg')
  
  accuracy_list = [15.853658536585368, 49.390243902439025, 62.80487804878049, 70.73170731707317, 73.17073170731707]
  k_list = [1, 3, 5, 7, 9]
  
  #This code makes it so you can save out chart.png without an X gui server
  import matplotlib.pyplot as plt
  import matplotlib.ticker as mtick
  
  title = "plot k, against accuracy"
  fig = plt.figure(title)
  ax = fig.add_subplot(1, 1, 1)
  
  plt.xlabel("k")
  plt.ylabel("accuracy")
                                                                                                                                 
  plt.grid()                                                                                                                     
                                                                                                                                 
  ax.plot(k_list, accuracy_list, 'o-', linewidth=2, markersize=4, color='b')                                                     
                                                                                                                                 
  saved_filename = "stuffi.png"                                                                                                  
  plt.savefig(saved_filename)                                                                                                    
  plt.show()                                                                                                                     
  plt.close() 
  