Hi, thank you very much for the quick answer :-) ok, I will use the str() trick.
On Fri, Jul 20, 2012 at 12:25 PM, Tamás Nepusz <[email protected]> wrote: > Hello, > > This is a side effect of trying to bring the behaviour of igraph's GraphML > exporter closer to the GraphML specifications; more details are to be found > in this bug report: > > https://bugs.launchpad.net/igraph/+bug/918138 > > Until this bug is resolved, you have to explicitly call str() on your dict > attributes before saving the graph into GraphML. Alternatively, if you are > sure that you won't need the graph outside Python, you can simply save it > in Python's pickled format, which will preserve every single attribute as > is. > > All the best,-- > T. > > > On Friday, 20 July 2012 at 12:20, Giovanni Marco Dall'Olio wrote: > > > Hello, > > I have a problem when storing graphs as graphml files using the python > igraph library. > > It seems that when I store a graph as a graphml file, all the attributes > that are based on python dictionaries are lost. > > > > Let's say I have a graph like the following: > > > > >>> import igraph > > >>> g = igraph.Graph() > > >>> g['dict_attribute'] = {1:2, 3:4} > > >>> g['string_attribute'] = 'dsadsadas' > > > > This graph has two attributes, one is a string and one is a dictionary. > But when I try to store it as a graphml file, the dict_attribute is lost: > > > > >>> g.write_graphml('mygraph.graphml') > > >>> g_loaded = igraph.read('mygraph.graphml') > > >>> g_loaded.attributes() > > ['string_attribute'] > > > > What's happening? Why 'dict_attribute' is missing? It seems that the > problem is in the write_graphml function, because if I open the file > mygraph.graphml, dict_attribute is not there. > > In the 0.5.4 version, dictionary attributes were stored as strings, and > I could retrieve them using the ast.as_literal function. > > > > I am using igraph 0.6 and the python library python-igraph-0.6, which is > the one that is installed automatically by easy_install. > > > > Thank you very much in advance, > > Gio > > > > > > -- > > Giovanni Dall'Olio, phd student > > IBE, Institut de Biologia Evolutiva, CEXS-UPF (Barcelona, Spain) > > > > My blog on bioinformatics: http://bioinfoblog.it > > > > _______________________________________________ > > igraph-help mailing list > > [email protected] (mailto:[email protected]) > > https://lists.nongnu.org/mailman/listinfo/igraph-help > > > > -- Giovanni Dall'Olio, phd student IBE, Institut de Biologia Evolutiva, CEXS-UPF (Barcelona, Spain) My blog on bioinformatics: http://bioinfoblog.it
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