Terry J. Reedy <tjreedy@udel.edu> added the comment: os.setpgrp is unix only, I am windows only ;-(. However, the 3.1 manual says "Call the system call setpgrp() or setpgrp(0, 0)() depending on which version is implemented (if any). " Given the name of the function and the above, I suspect the OP is correct. The change is small enough that I might not bother with 2.6 and 3.1. ---------- assignee: -> docs@python components: +Documentation nosy: +docs@python, tjreedy versions: +Python 2.7, Python 3.1, Python 3.2 -Python 2.4, Python 2.5, Python 3.0 _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue4452> _______________________________________