Message 63671 - Python tracker

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In-reply-to
Author	jyasskin
Recipients	jyasskin
Date	2008年03月17日.16:45:05
SpamBayes Score	0.42594028
Marked as misclassified	No
Message-id	<1205772306.86.0.317312162506.issue2325@psf.upfronthosting.co.za>

Content
>>> class Meta(type): ... def __instancecheck__(self, other): ... return False >>> isinstance(3, Meta) In 2.6, this results in: Traceback (most recent call last): File "<stdin>", line 1, in <module> RuntimeError: maximum recursion depth exceeded while calling a Python object (That's a recursion in C, through PyObject_IsInstance and instancemethod_call) In 3.0, I get: Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: __instancecheck__() takes exactly 2 positional arguments (1 given)

Content

>>> class Meta(type):
... def __instancecheck__(self, other):
... return False
>>> isinstance(3, Meta)
In 2.6, this results in:
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
RuntimeError: maximum recursion depth exceeded while calling a Python object
(That's a recursion in C, through PyObject_IsInstance and
instancemethod_call)
In 3.0, I get:
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
TypeError: __instancecheck__() takes exactly 2 positional arguments (1
given)

History
Date	User	Action	Args
2008年03月17日 16:45:07	jyasskin	set	spambayes_score: 0.42594 -> 0.42594028 recipients: + jyasskin
2008年03月17日 16:45:06	jyasskin	set	spambayes_score: 0.42594 -> 0.42594 messageid: <1205772306.86.0.317312162506.issue2325@psf.upfronthosting.co.za>
2008年03月17日 16:45:06	jyasskin	link	issue2325 messages
2008年03月17日 16:45:05	jyasskin	create

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