Message 98440 - Python tracker

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Author	eric.araujo
Recipients	eric.araujo, pitrou, pwaller, rhettinger
Date	2010-01-27.16:16:15
SpamBayes Score	9.713172e-06
Marked as misclassified	No
Message-id	<1264608991.5.0.683191710781.issue7796@psf.upfronthosting.co.za>
In-reply-to

Content
Hello namedtuple is a factory function, not a class (as hinted by the naming in lower case, see PEP 8), so there are no instances of namedtuple. You can workaround that with issubclass, or checking for special namedtuples attributes (_asdict, _replace, but this is fragile), or just not use class cheking, often unneeded in Python code. Kind regards

Hello

namedtuple is a factory function, not a class (as hinted by the naming in lower case, see PEP 8), so there are no instances of namedtuple.

You can workaround that with issubclass, or checking for special namedtuples attributes (_asdict, _replace, but this is fragile), or just not use class cheking, often unneeded in Python code.

Kind regards

History
Date	User	Action	Args
2010-01-27 16:16:31	eric.araujo	set	recipients: + eric.araujo, rhettinger, pitrou, pwaller
2010-01-27 16:16:31	eric.araujo	set	messageid: <1264608991.5.0.683191710781.issue7796@psf.upfronthosting.co.za>
2010-01-27 16:16:15	eric.araujo	link	issue7796 messages
2010-01-27 16:16:15	eric.araujo	create