[Tutor] Logging stdout and stderr

Hugo González Monteverde hugonz-lists at h-lab.net
Sat Jun 18 05:27:44 CEST 2005


Why don't you print it while you get it..?

import os, sys

logfile = open("logfile.txt", "r")
input, output = os.popen2("your command")

while True:
   temp = output.read(1) #or whatever fits you, more bytes is faster

   if not temp: //EOF reached


Connor.Smith at huntington.com wrote:
> Hi there -
> I'm trying to log the results of a command that I'm running via the 
> popen2 module to a file, while at the same time displaying its progress 
> on the screen. So, at the end of the run, I should have the entire 
> output (stdout and stderr) on the screen, but also have two file objects 
> each with the contents of one of stdout and stderr.  I can figure out 
> how to write the results to a file, and then process or log it, but what 
> I can't do is figure out a way to simultaneously display it to the 
> screen, kind of like how unix's "tee" utility works.
> Can anyone help?
> -Cs
> ------------------------------------------------------------------------
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