Display console output to status bar in Tkinter?

[rhyde99]

I need to know how it is possible to display only the last line of
stdout/stderr output to my Tkinter status bar.  In the Python FAQ I saw a
way to catch stdout/stderr output, but this method concatenates all of the
output.  I just need the last line.

I hope this is clear, and that someone can help!

Thanks in advance