Python, Tkinter and popen problem

norseman norseman at
Thu May 28 02:15:03 CEST 2009

Peter Otten wrote:
> norseman wrote:
>> This was sent 5/19/09 and as yet has received no comments.
>> I'm resending just in case a new reader might have an answer.
> If you had posted two tiny scripts demonstrating your problem instead of the 
> longwinded explanation I might have tinkered.
> Peter

Since it got lost:
Python 2.5.2 with Tkinter in the download package
Linux Slackware 10.2

That's one of the problems - with Tkinter you don't get tiny files. :)

I have kept working on this and now have it to the point that sending TO 
the child w/Tkinter works.  Getting messages from the child now shows 
that the flush() is not taking place in timely fashion.  ALL print 
statements FROM child do now flush and are shown correctly, but only 
when the child terminates.

Question now is how to force a flush of stdout while the program is 
running with tkinter in use.

tkinter section is   print "string"
                 or   sys.stdout.write("string")
        sys.stdout.flush() fails totally
I don't care how it's flushed as long as it works on whatever machine 
python runs on.

NOTE: program runs perfectly on both Linux and Windows XP Pro when run 
from the keyboard. But not from another python program that wants the 
phone line connected. (stdin/stdout)  Gee... There is never a County 
Lineman when needed is there Glen? :)


More information about the Python-list mailing list