Matplotlib animation either freezes after a few frames or just doesn't work

Question

I\'ve been trying for hours to get this simple script working, but nothing I do seems to help. It\'s a slight modification of the most basic animated plot sample code from t

Answer 1

calling time.sleep() or plt.pause() causes flicker on the graph window when using blitting, but I got good results by simply calling the event loop explicitely :

fig.canvas.blit() # or draw()
fig.canvas.start_event_loop(0.001) #1 ms seems enough