retreiving parallel edges

[watson ix]

hi there,

i have a separate (non-pygraphviz) program which returns the equivalent of 

import pygraphviz as GV

G = GV.AGraph(strict=False,directed=True)

G.add_edge('a','b',label='one')

G.add_edge('a','b',label='two')

and I want to be able to access both edges.

but when I do:

e = G.get_edge('a','b')

print e

print e.attr['label']

I get:

(u'a', u'b')
two

Is there any way to get access to both edges via reference to their nodes?

I can do:

print G.edges()

which gives:

[(u'a', u'b'), (u'a', u'b')]

but I'd rather not have to use a workaround of checking all edges in the graph!

w

[Aric Hagberg]

It would make sense for get_edge() to return both edges but I see that
isn't the case.
A workaround might be to pass the nodes to the edges() method.

In [25]: A = pgv.AGraph(strict=False)

In [26]: A.add_edge(1,2,key='one')

In [27]: A.add_edge(1,2,key='two')

In [28]: A.edges([1,2],keys=True)
Out[28]: [(u'1', u'2', u'one'), (u'1', u'2', u'two')]

Aric

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