Message 283370 - Python tracker

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In-reply-to
Author	serhiy.storchaka
Recipients	docs@python, serhiy.storchaka, vstinner
Date	2016年12月16日.07:21:19
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1481872879.84.0.0114129819879.issue28977@psf.upfronthosting.co.za>

Content
"O" is not the only special case. "S" and "N" unpack a tuple argument too. "O&" converter should return a tuple, otherwise it is an error. All other format codes are illegal for single argument. I would just deprecate this feature (in PyObject_CallFunction, not in Py_BuildValue). The behavior of PyObject_CallFunction with a single argument can be made more consistent and useful.

Content

"O" is not the only special case. "S" and "N" unpack a tuple argument too. "O&" converter should return a tuple, otherwise it is an error. All other format codes are illegal for single argument.
I would just deprecate this feature (in PyObject_CallFunction, not in Py_BuildValue). The behavior of PyObject_CallFunction with a single argument can be made more consistent and useful.

History
Date	User	Action	Args
2016年12月16日 07:21:19	serhiy.storchaka	set	recipients: + serhiy.storchaka, vstinner, docs@python
2016年12月16日 07:21:19	serhiy.storchaka	set	messageid: <1481872879.84.0.0114129819879.issue28977@psf.upfronthosting.co.za>
2016年12月16日 07:21:19	serhiy.storchaka	link	issue28977 messages
2016年12月16日 07:21:19	serhiy.storchaka	create

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