FigureCanvasAgg' object has no attribute 'invalidate' ? python plotting

Question

I\'ve been following \'python for data analysis\'. On pg. 345, you get to this code to plot returns across a variety of stocks. However, the plotting function does not work for

Answer 1

Not an answer but I can't figure out how to put code block in comments :)

So I got to this question because the exact same thing was happening on my Mac

/Users/briford/myPVE/workbench/lib/python2.7/site-packages/matplotlib/backends/backend_macosx.pyc in draw_if_interactive()
    227         figManager =  Gcf.get_active()
    228         if figManager is not None:
--> 229             figManager.canvas.invalidate()
    230 
AttributeError: 'FigureCanvasAgg' object has no attribute 'invalidate'

Anyway I know it's not satisfying but just doing a shutdown of my ipython notebook service and doing a restart cleared it up... shrug...