[New-bugs-announce] [issue17287] slice inconsistency

Elazar Gershuni report at bugs.python.org
Sun Feb 24 13:49:20 CET 2013

New submission from Elazar Gershuni:

slice behavior is not consistent for negative lower or upper arguments, which could be surprising:

>>> 'hello'[:-2]
>>> 'hello'[:-1]
>>> 'hello'[:-0]

this is obvious when written as literal, but not so obvious when using variables in expressions like 'fullname[:-len(lastname)]'. same goes for 'lower'.

components: None
messages: 182874
nosy: elazar
priority: normal
severity: normal
status: open
title: slice inconsistency
type: enhancement
versions: Python 3.1

Python tracker <report at bugs.python.org>

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