Jan-Philip Gehrcke added the comment: For Python 2.7, we will not change behavior, even if unexpected. Instead, the sys.exit-docs should be adjusted and - warn about the fact that nothing is written to stderr if sys.exit(msg) gets called from a non-primary thread, and - note that SystemExit raised in a non-primary thread lets the thread exit silently. I have attached a corresponding patch, please review my wording! ---------- keywords: +patch Added file: http://bugs.python.org/file37983/issue6634_py27.patch _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue6634> _______________________________________