>>> """
================
pyplot animation
================

Generating an animation by calling `~.pyplot.pause` between plotting commands.

The method shown here is only suitable for simple, low-performance use.  For
more demanding applications, look at the :mod:`.animation` module and the
examples that use it.

Note that calling `time.sleep` instead of `~.pyplot.pause` would *not* work.
"""
... 
... import matplotlib.pyplot as plt
... import numpy as np
... 
... np.random.seed(19680801)
... data = np.random.random((50, 50, 50))
... 
... fig, ax = plt.subplots()
... 
... for i in range(len(data)):
...     ax.cla()
...     ax.imshow(data[i])
...     ax.set_title("frame {}".format(i))
...     # Note that using time.sleep does *not* work here!
...     plt.pause(0.1)
...