Message 60590 - Python tracker

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Content 
If you kill a python process with SIGINT (e.g. control-c), it catches 
the signal, and raises a KeyboardInterrupt. If the KeyboardInterrupt 
propagates to the top level, python exits. However, it exits with a 
result of 1, not a result of SIGINT. This means that if you run 
python in a shell script, the script will not properly exit on C-c.

When exiting because of a KeyboardInterrupt, python ought to 
reraise the SIGINT, as follows, so that the exit code is correct for 
the caller:
        signal(SIGINT, SIG_DFL);
        kill(getpid(), SIGINT);

See also http://www.cons.org/cracauer/sigint.html for a more 
detailed discussion on the topic.