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Misleading stating, that SIGINT handler is installed by default #72981
Description
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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GitHub fields:
assignee = None
closed_at = <Date 2019-05-07.15:29:33.044>
created_at = <Date 2016-11-24.22:25:57.469>
labels = ['type-bug', '3.7', 'docs']
title = 'Misleading stating, that SIGINT handler is installed by default'
updated_at = <Date 2019-05-07.15:55:42.758>
user = 'https://bugs.python.org/JanVeleck'bugs.python.org fields:
activity = <Date 2019-05-07.15:55:42.758>
actor = 'miss-islington'
assignee = 'docs@python'
closed = True
closed_date = <Date 2019-05-07.15:29:33.044>
closer = 'mdk'
components = ['Documentation']
creation = <Date 2016-11-24.22:25:57.469>
creator = 'Jan Veleck\xc3\xbd'
dependencies = []
files = ['45695', '45696']
hgrepos = []
issue_num = 28795
keywords = ['patch']
message_count = 7.0
messages = ['281664', '281671', '281728', '282047', '341749', '341751', '341759']
nosy_count = 4.0
nosy_names = ['docs@python', 'mdk', 'Jan Veleck\xc3\xbd', 'miss-islington']
pr_nums = ['13121', '13158']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue28795'
versions = ['Python 2.7', 'Python 3.3', 'Python 3.4', 'Python 3.5', 'Python 3.6', 'Python 3.7']
Activity
JanVeleck commentedon Nov 24, 2016
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
JulienPalard commentedon Nov 25, 2016
Maybe something like:
JanVeleck commentedon Nov 25, 2016
That's good.
JulienPalard commentedon Nov 29, 2016
Proposed as patches but english is not my native language so please review carefully.
JulienPalard commentedon May 7, 2019
New changeset e85ef7a by Julien Palard in branch 'master':
bpo-28795: Signal documentation: Fix misleading statement. (GH-13121)
e85ef7a
JulienPalard commentedon May 7, 2019
Thanks for reporting Jan! It's finally merged \o/
miss-islington commentedon May 7, 2019
New changeset 721729f by Miss Islington (bot) in branch '3.7':
bpo-28795: Signal documentation: Fix misleading statement. (GH-13121)
721729f