The python-matplotlib-doc package also includes extra documentation for matplotlib. ... One of them, FuncAnimation, can generate an animation by repeatedly applying a given function and generating the ...

matplotlib.pyplot. xkcd () The documentation recommends that you install the “Humor Sans” font for best effect. On one of our linux boxes, we were able to do this with a simple: ...

I suspect the problem is that matplotlib needs constant-length arrays to plot two on the same plot. For each 'tick' of the animate function it will need to know what value to write for that instant.