Message 64481 - Python tracker

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Author	cyhawk
Recipients	cyhawk
Date	2008-03-25.13:44:44
SpamBayes Score	0.05599113
Marked as misclassified	No
Message-id	<1206452686.51.0.217993005172.issue2480@psf.upfronthosting.co.za>
In-reply-to

Content
In the attached demo I create a graph of 250 nodes, all of which are connected to every other node, and this is represented by a set attribute of the Node objects. When I try to pickle this graph, it fails in various ways. In regular pickle it is always a "maximum recursion depth exceeded" error. In cPickle it is either a KeyError or a silent termination of the process. (As tested on Windows XP 32 bits.) It depends on the size of the graph. For smaller graphs (say 100 nodes) it works fine. If connections are described using a dictionary or even a list, I get the same errors.

In the attached demo I create a graph of 250 nodes, all of which are
connected to every other node, and this is represented by a set
attribute of the Node objects.

When I try to pickle this graph, it fails in various ways. In regular
pickle it is always a "maximum recursion depth exceeded" error. In
cPickle it is either a KeyError or a silent termination of the process.
(As tested on Windows XP 32 bits.) It depends on the size of the graph.
For smaller graphs (say 100 nodes) it works fine.

If connections are described using a dictionary or even a list, I get
the same errors.

History
Date	User	Action	Args
2008-03-25 13:44:46	cyhawk	set	spambayes_score: 0.0559911 -> 0.05599113 recipients: + cyhawk
2008-03-25 13:44:46	cyhawk	set	spambayes_score: 0.0559911 -> 0.0559911 messageid: <1206452686.51.0.217993005172.issue2480@psf.upfronthosting.co.za>
2008-03-25 13:44:45	cyhawk	link	issue2480 messages
2008-03-25 13:44:44	cyhawk	create