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Re: [igraph] Loading graphs into python-igraph

From: Tamas Nepusz
Subject: Re: [igraph] Loading graphs into python-igraph
Date: Thu, 23 Oct 2008 23:23:33 +0100

Another thing I’m wondering about: is there any way to load a graph in Python-igraph that’s not in an external file? Igraph.load() and Graph.Read() seem to only be able to support an external file.
You can use the Graph constructor straight away:

edges=[(0,1), (1,2), (2,0)]
g=Graph(edges, directed=True)

The full syntax is:

Graph(num_of_vertices, edgelist, directed, graph_attrs, vertex_attrs, edge_attrs)

but you can omit num_of_vertices if it equals the maximum ID found in edgelist + 1. graph_attrs must be a dict of graph attributes, vertex_attrs is a dict of vertex attributes (assigning attribute names to lists of the corresponding vertex attribute values), edge_attrs is a dict of edge attributes.


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