code: def __exit__(self, exc_type, exc_val, exc_tb):
      self.render()
  
imports: import itertools
  import math
  import numpy
  import matplotlib
  import matplotlib.pyplot
  import IPython.display
  from mpl_toolkits.mplot3d import Axes3D
  from matplotlib.collections import PolyCollection
label_desc: Use image node_id 3 for calling the Canvas obj's underlying member method code with example usage: obj.__exit__(exc_type, exc_val, exc_tb) without return types