Second try: non-blocking subprocess pipe and Tkinter in 2.7

From	Kevin Walzer <kw@codebykevin.com>
Newsgroups	comp.lang.python
Subject	Second try: non-blocking subprocess pipe and Tkinter in 2.7
Date	2012-12-21 10:52 -0500
Organization	A noiseless patient Spider
Message-ID	<kb20j5$76m$1@dont-email.me> (permalink)

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Yesterday I posted a question about keeping a Tkinter GUI during a 
long-running process, i.e. reading data from a pipe via the subprocess 
module. I think that question did not quite get at the heart of the 
issue because it assumed that Python, like Tcl which underlies Tkinter, 
supports non-blocking, asynchronous reading out of the box. Apparently 
it does not.

So, my question is hereby revised as such: how can I implement a 
non-blocking read of a subprocess pipe that can write data to the 
Tkinter text widget in an manner that does not cause the GUI to lock up?

--Kevin
-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com

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Second try: non-blocking subprocess pipe and Tkinter in 2.7 Kevin Walzer <kw@codebykevin.com> - 2012-12-21 10:52 -0500
  Re: Second try: non-blocking subprocess pipe and Tkinter in 2.7 Peter Otten <__peter__@web.de> - 2012-12-21 17:33 +0100
  Re: Second try: non-blocking subprocess pipe and Tkinter in 2.7 Terry Reedy <tjreedy@udel.edu> - 2012-12-21 22:00 -0500

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