This works if you run with the -X:Frames option. This is because namedtuple is using sys._getframe to find the calling module name and setting it on the created class. Alternately you could do this yourself:
Point.__module__ = __name__ You could file a bug on this on CodePlex but to fix it we probably need to modify the standard library and provide an alternate namedtuple implementation which doesn't require sys._getframe. From: users-boun...@lists.ironpython.com [mailto:users-boun...@lists.ironpython.com] On Behalf Of Don Sawatzky Sent: Monday, February 15, 2010 7:41 AM To: users@lists.ironpython.com Subject: [IronPython] CPickle problem This assert works in CPython 2.6 and not in IronPython 2.6.1 RC 1 with a failure in dumps(): from collections import namedtuple # verify that instances can be pickled from cPickle import loads, dumps Point = namedtuple('Point', 'x, y', False) p = Point(x=10, y=20) assert p == loads(dumps(p))
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