'hasattr' fix to suppress only AttributeError

[YurySelivanov]

BPO	9666
Nosy	@jcea, @benjaminp
Files	hasattr.patch

^{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 = 'https://github.com/benjaminp'
closed_at = <Date 2010-08-24.03:27:52.630>
created_at = <Date 2010-08-24.02:56:06.335>
labels = ['type-bug', 'library', 'docs']
title = "'hasattr' fix to suppress only AttributeError"
updated_at = <Date 2010-09-28.17:15:20.674>
user = 'https://bugs.python.org/YurySelivanov'

bugs.python.org fields:

activity = <Date 2010-09-28.17:15:20.674>
actor = 'jcea'
assignee = 'benjamin.peterson'
closed = True
closed_date = <Date 2010-08-24.03:27:52.630>
closer = 'benjamin.peterson'
components = ['Documentation', 'Library (Lib)']
creation = <Date 2010-08-24.02:56:06.335>
creator = 'Yury.Selivanov'
dependencies = []
files = ['18622']
hgrepos = []
issue_num = 9666
keywords = ['gsoc']
message_count = 2.0
messages = ['114767', '114768']
nosy_count = 4.0
nosy_names = ['jcea', 'benjamin.peterson', 'docs@python', 'Yury.Selivanov']
pr_nums = []
priority = 'normal'
resolution = 'accepted'
stage = None
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue9666'
versions = ['Python 3.2']

[YurySelivanov]

As discussed on python-dev mailing list (http://mail.python.org/pipermail/python-dev/2010-August/103178.html), 'hasattr' default behaviour should be changed to suppress only AttributeError exceptions. Other should pass through.

The fix, however, shouldn't change behaviour of existing C API, functions PyObject_HasAttr and PyObject_HasAttrString in particular.

I'm targeting this issue on Python 3.2 version, but probably it may be introduced in the next Python 3.1 maintenance release.

[benjaminp]

Fixed in r84294. I will not backport to 3.1. Thanks for the contribution!