>>> """
=================================================
Animated image using a precomputed list of images
=================================================

"""
... 
... import numpy as np
... import matplotlib.pyplot as plt
... import matplotlib.animation as animation
... 
... fig, ax = plt.subplots()
... 
... 
... def f(x, y):
...     return np.sin(x) + np.cos(y)
... 
... x = np.linspace(0, 2 * np.pi, 120)
... y = np.linspace(0, 2 * np.pi, 100).reshape(-1, 1)
... 
... # ims is a list of lists, each row is a list of artists to draw in the
... # current frame; here we are just animating one artist, the image, in
... # each frame
... ims = []
... for i in range(60):
...     x += np.pi / 15.
...     y += np.pi / 20.
...     im = ax.imshow(f(x, y), animated=True)
...     if i == 0:
...         ax.imshow(f(x, y))  # show an initial one first
...     ims.append([im])
... 
... ani = animation.ArtistAnimation(fig, ims, interval=50, blit=True,
...                                 repeat_delay=1000)
... 
... # To save the animation, use e.g.
... #
... # ani.save("movie.mp4")
... #
... # or
... #
... # writer = animation.FFMpegWriter(
... #     fps=15, metadata=dict(artist='Me'), bitrate=1800)
... # ani.save("movie.mp4", writer=writer)
... 
... plt.show()
...