Message 65656 - Python tracker

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In-reply-to
Author	amaury.forgeotdarc
Recipients	amaury.forgeotdarc, rharris
Date	2008年04月21日.00:14:57
SpamBayes Score	0.13482213
Marked as misclassified	No
Message-id	<1208736903.01.0.0882638679972.issue2651@psf.upfronthosting.co.za>

Content
Attached patch changes KeyError: when it has two arguments, they are formatted with "%s: %r". Otherwise the base repr is called, and this allows the round trip. Standard objects (dict, set, UserDict, namedtuple, defaultdict, weak dictionaries) now raise something like KeyError("not in dict", key). At least one place in the stdlib relied on the key being the first argument to KeyError() (in ConfigParser.py) I don't know if this incompatibility will break much code. At least we can say that the current behavior is not documented.

Content

Attached patch changes KeyError: when it has two arguments, they are
formatted with "%s: %r". Otherwise the base repr is called, and this
allows the round trip.
Standard objects (dict, set, UserDict, namedtuple, defaultdict, weak
dictionaries) now raise something like KeyError("not in dict", key). 
At least one place in the stdlib relied on the key being the first
argument to KeyError() (in ConfigParser.py)
I don't know if this incompatibility will break much code. At least we
can say that the current behavior is not documented.

History
Date	User	Action	Args
2008年04月21日 00:15:04	amaury.forgeotdarc	set	spambayes_score: 0.134822 -> 0.13482213 recipients: + amaury.forgeotdarc, rharris
2008年04月21日 00:15:03	amaury.forgeotdarc	set	spambayes_score: 0.134822 -> 0.134822 messageid: <1208736903.01.0.0882638679972.issue2651@psf.upfronthosting.co.za>
2008年04月21日 00:15:01	amaury.forgeotdarc	link	issue2651 messages
2008年04月21日 00:15:00	amaury.forgeotdarc	create

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