2.7.9: PhotoImage get/put

[Randy Day]

In article <mailman.63.1445379941.878.python-list at python.org>, 
emile at fenx.com says...

[snip]

> I have no idea why, but here are some ideas I'd try out.
 
> So is it refreshing upon completion of the loop, or upon exit from 
> process()?

It turns out I need to call root.update_idletasks()
for my root Tk object to get it to refresh after
I put the pixel.

It works great now.

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