update to PEP 344 - exception attributes

[jimjjewett]

BPO	1626538
Files	pep344diff.txt

^{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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assignee = None
closed_at = <Date 2008-01-06.22:29:46.270>
created_at = <Date 2007-01-02.23:50:23.000>
labels = ['docs']
title = 'update to PEP 344 - exception attributes'
updated_at = <Date 2008-01-06.22:29:46.270>
user = 'https://bugs.python.org/jimjjewett'

bugs.python.org fields:

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assignee = 'ping'
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creation = <Date 2007-01-02.23:50:23.000>
creator = 'jimjjewett'
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issue_num = 1626538
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url = 'https://bugs.python.org/issue1626538'
versions = ['Python 3.0']

[jimjjewett]

PEP-344 proposes adding __traceback__, __context__, and __cause__ attributes to Exception.

The primary objection has been that the __traceback__ exception would cause a cycle, which would delay resource release.

This objection is now added to the PEP, along with some details about why it is a problem, and why weakrefs aren't a straightforward solution.

[jimjjewett]

http://mail.python.org/pipermail/python-3000/2007-January/005322.html

Guido said he could check it in if Ping agrees, so I'm assigning the patch to ping (who I *hope* is Ka-Ping Yee)

[jimjjewett]

File Added: pep344diff.txt

[ping]

Okay, it will take me a moment to page this back into my head and respond.

[ping]

I've checked in this change. Thanks for writing the patch.