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Re: [igraph] Python bindings issue

From: Tamas Nepusz
Subject: Re: [igraph] Python bindings issue
Date: Tue, 3 Jun 2008 22:29:29 +0200

Dear Filip,

# create the vertex_attrs dictionary
vattrs = {0:nodes[0],1:nodes[1],2:nodes[2]}
The vertex_attrs dictionary should map attribute names to the list of attribute values. If you use the dictionary above, igraph does not know the attribute name to which it should map the nodes[] array. A better solution is this:

>>> vattrs = {"node": nodes}

This maps the "nodes" list (or more precisely a shallow copy of that) to an attribute called "node":

>>> g = Graph(n=2, edges=[(0,1),(0,2)], directed=True, vertex_attrs=vattrs)
>>> print g.vs["node"]
[<__main__.Node instance at 0x192a3a0>, <__main__.Node instance at 0x192a300>, <__main__.Node instance at 0x192a378>]


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