New submission from Antoine Pitrou <pit...@free.fr>:

Compare:

$ ./python -c "import subprocess, signal, time; p = subprocess.Popen(['cat']); 
time.sleep(1); p.send_signal(signal.SIGINT); print(p.wait())"
-2

with:

$ ./python -c "import subprocess, signal, time; p = subprocess.Popen(['python', 
'-c', 'input()']); time.sleep(1); p.send_signal(signal.SIGINT); print(p.wait())"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
KeyboardInterrupt
1

Python's behaviour apparently breaks a common assumption towards Unix processes 
(see bug reported at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=652926). 
A solution would be to add a signal number attribute to KeyboardInterrupt, and 
use that value when computing the process exit code.

----------
components: Interpreter Core
messages: 155174
nosy: loewis, neologix, pitrou
priority: normal
severity: normal
status: open
title: On KeyboardInterrupt, the exit code should mirror the signal number
type: enhancement
versions: Python 3.3

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue14229>
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