Interactive unbuffered STDOUT

[Kevin Smith]

Is there a way that sys.stdout can be switched to unbuffered during execution? 
 I know that you can set the PYTHONUNBUFFERED environment variable or use the 
-u option, but those have to be done before the interpretter is loaded.

I see that there is a bufsize option on the open() function.  If I could 
recreate sys.stdout with bufsize=0, that would be great.

Kevin Smith
Kevin.Smith at sas.com