[docs] [issue28795] Misleading stating, that SIGINT handler is installed by default

[Jan Velecký]

New submission from Jan Velecký:

Hello,
documentation (https://docs.python.org/2/library/signal.html) states, that Python by default installs SIGINT handler which cause KeyboardInterrupt. This is not true everytime according to implementation.
"Python installs a small number of signal handlers by default: SIGPIPE ... and SIGINT is translated into a KeyboardInterrupt exception."
It should also mention this "SIGINT is installed only, when default handler is set at startup.". Because user can run python script from non-interative shell as background task and SIGINT handler is not installed, regardless although user does not change Python default behaviour.

Related SO:
http://stackoverflow.com/questions/40775054/capturing-sigint-using-keyboardinterrupt-exception-works-in-terminal-not-in-scr/40785230?noredirect=1

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assignee: docs at python
components: Documentation
messages: 281664
nosy: Jan Velecký, docs at python
priority: normal
severity: normal
status: open
title: Misleading stating, that SIGINT handler is installed by default
type: behavior
versions: Python 2.7, Python 3.3, Python 3.4, Python 3.5, Python 3.6, Python 3.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28795>
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