Ah, ok then, thanks. =) Found the issue and almost solved it. Added
from sage.structure.sage_object import register_unpickle_override
import networkx.classes
register_unpickle_override('networkx.xgraph','XGraph',
networkx.classes.Graph, call_name=('networkx.classes','Graph'))
register_unpickle_override('networkx.xdigraph','XDiGraph',
networkx.classes.DiGraph, call_name=('networkx.classes','DiGraph'))
to the graph_backends.py
This will pass the tests but it still isn't quite right. The issue is
in unpickling graphs with multiple edges. Due to the nature of the
networkx library changes, unpickling a graph with multiple edges
results in one without multiple edges which is broken when calling
edges() on it.
I was thinking of writing a translation class that would take whatever
input from either of the two deprecated classes. Then, to use it,
require the user to call a convert() method or something on it, which
would return the proper networkx class with appropriate data. This
seems less than ideal, however, and some sort of post-unpickle hook
would seem better, but poking around it doesn't seem that one exists.
I would love suggestions for other ways to solve this.
- Greg
On Jan 29, 1:59 pm, "Nicolas M. Thiery" <nicolas.thi...@u-psud.fr>
wrote:
> On Fri, Jan 29, 2010 at 09:31:10AM -0800, Greg McWhirter wrote:
> > Thanks for the rely. I tried that with boh Graph and Poset (since
> > graph failed as well) under networkx-0.36 and networkx-1.0.1 both un
> > un-patched 4.3.1 and patched to account for 1.0.1.
> > However, everything went through without a hitch.
>
> > Un tar-ing the pickle_jar and load
> > ("_class__sage_graphs_graph_Graph__.sobj") or load
> > ("_class__sage_combinat_posets_posets_FinitePoset__.sobj") gives the
> > error of "ImportError: No module named xgraph" or "ImportError: No
> > module named xdigraph" respectively (these modules held the classes
> > removed between 0.36 and 1.0.1). I don't know where these are getting
> > called if the lines output by explain(dumps(P)) all work?
>
> Hmm. Then the best is to call explain_pickle directly on those files,
> rather than guessing which object causes trouble. What you can try is
> to extract the pickle jar in /tmp:
>
> tar jxvf /opt/sage-4.3.1/data/extcode/pickle_jar/pickle_jar.tar.bz2
>
> and run:
>
> sage:
> explain_pickle(file="/tmp/pickle_jar/_class__sage_graphs_graph_DiGraph__.so
> bj")
> pg_DiGraph = unpickle_global('sage.graphs.graph', 'DiGraph')
> si1 = unpickle_newobj(pg_DiGraph, ())
> pg_NetworkXGraphBackend =
> unpickle_global('sage.graphs.base.graph_backends', 'NetworkXGraphBackend')
> si2 = unpickle_newobj(pg_NetworkXGraphBackend, ())
> pg_XDiGraph = unpickle_global('networkx.xdigraph', 'XDiGraph')
> si3 = unpickle_newobj(pg_XDiGraph, ())
> si4 = {}
> unpickle_build(si3, {'name':'', 'pred':{}, 'selfloops':False, 'succ':si4,
> 'adj':si4, 'multiedges':False})
> unpickle_build(si2, {'_nxg':si3})
> unpickle_build(si1, {'_weighted':False, '_boundary':[], '_backend':si2,
> '_pos':None})
> si1
>
> Good luck!
> Nicolas
> --
> Nicolas M. Thi ry "Isil" <nthi...@users.sf.net>http://Nicolas.Thiery.name/
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