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From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: GUI:-please answer want to learn GUI programming in python , how should i proceed.
Date: Mon, 16 Dec 2013 19:10:39 -0500
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On 12/16/2013 5:40 PM, Chris Angelico wrote:

> Nice, though Python's threading and/or multiprocessing can do 90% of
> what people want. Side point: What about Tk? Can you (a) run separate
> GUI threads for separate windows? (b) manipulate widgets created by
> another thread?

When running tk via tkinter, limiting tkinter/tk calls to the main 
thread is the safest thing to do. I do not know whether the problems 
people have had doing otherwise are due to Python or inherent in tk itself.

-- 
Terry Jan Reedy