Enhance error handling in the sqlite module

[vstinner]

BPO	21858
Nosy	@vstinner
Files	sqlite_error_handling-wip.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 = None
closed_at = <Date 2014-06-26.21:48:24.107>
created_at = <Date 2014-06-24.09:50:54.952>
labels = []
title = 'Enhance error handling in the sqlite module'
updated_at = <Date 2014-06-26.21:48:27.441>
user = 'https://github.com/vstinner'

bugs.python.org fields:

activity = <Date 2014-06-26.21:48:27.441>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2014-06-26.21:48:24.107>
closer = 'vstinner'
components = []
creation = <Date 2014-06-24.09:50:54.952>
creator = 'vstinner'
dependencies = []
files = ['35768']
hgrepos = []
issue_num = 21858
keywords = ['patch']
message_count = 2.0
messages = ['221445', '221651']
nosy_count = 2.0
nosy_names = ['vstinner', 'python-dev']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue21858'
versions = ['Python 3.4', 'Python 3.5']

[vstinner]

The _sqlite module doesn't handle correctly Python errors. It may loose the current Python exception: test_sqlite fails when the patch of the issue bpo-21857 is applied.

Attached patch is a work-in-progress patch to fail earlier when Python raises an exception.

[python-dev]

New changeset 62612b195cb5 by Victor Stinner in branch '3.4':
Issue bpo-21858: Better handling of Python exceptions in the sqlite3 module.
http://hg.python.org/cpython/rev/62612b195cb5

New changeset 169171da66fa by Victor Stinner in branch 'default':
(Merge 3.4) Issue bpo-21858: Better handling of Python exceptions in the sqlite3
http://hg.python.org/cpython/rev/169171da66fa