Call sys.except_hook if exception occurs in __del__

[jpe]

BPO	1691387
Nosy	@bitdancer
Superseder	bpo-7317: Display full tracebacks when an error occurs asynchronously

^{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 2013-03-18.20:39:04.745>
created_at = <Date 2007-03-30.15:49:23.000>
labels = ['interpreter-core', 'type-feature']
title = 'Call sys.except_hook if exception occurs in __del__'
updated_at = <Date 2013-03-18.20:39:04.743>
user = 'https://bugs.python.org/jpe'

bugs.python.org fields:

activity = <Date 2013-03-18.20:39:04.743>
actor = 'r.david.murray'
assignee = 'none'
closed = True
closed_date = <Date 2013-03-18.20:39:04.745>
closer = 'r.david.murray'
components = ['Interpreter Core']
creation = <Date 2007-03-30.15:49:23.000>
creator = 'jpe'
dependencies = []
files = []
hgrepos = []
issue_num = 1691387
keywords = []
message_count = 3.0
messages = ['55052', '109837', '184516']
nosy_count = 3.0
nosy_names = ['jpe', 'r.david.murray', 'BreamoreBoy']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '7317'
type = 'enhancement'
url = 'https://bugs.python.org/issue1691387'
versions = ['Python 3.2']

[jpe]

Is there a reason why sys.except_hook isn't called when __del__ returns with an exception? If not, I can write a patch to call sys.except_hook from PyErr_WriteUnraisable. The default of printing the full traceback should be possible in many situations.

[BreamoreBoy]

Please provide a patch.

[bitdancer]

Re-reported and fixed in bpo-7317.