 import matplotlib.pyplot as plt import matplotlib.patches as patches import matplotlib.animation as animation import numpy as np  startx = 0 endx = 00 blocks = 000 points = np.random.randint(startx,endx,size=blocks) y = [-0]*int(endx-startx)  fig = plt.figure(figsize=(0,0)) ax = fig.add_subplot(000,aspect='equal') ax.set_xlim(startx,endx) ax.set_ylim(0,0)  def filler(