[Kwant] Re: Getting the List of Neighbors After finalization

[Christoph Groth]

Henry Axt wrote:

> Am I mistaken or is it indeed the case that the in_neighbors method is
> not availabe in the current version of Kwant?

Builder graphs are only "one-way" and not "two-way" (using the
terminology of Kwant’s graph module).  That’s why you have to use the
method ’out_neighbors’.  The method ’in_neigbhors’ has never been
available for graphs as they are prepared for finalized builders as far
as I remember.

>>> import kwant
>>> kwant.__version__
'1.4.2'
>>> lat = kwant.lattice.chain()
>>> syst = kwant.Builder()
>>> syst[ (lat(x) for x in range(10)) ] = 0
>>> syst[lat.neighbors()] = 1
>>> fsyst = syst.finalized()
>>> list(fsyst.graph.out_neighbors(0))
[1]
>>> list(fsyst.graph.out_neighbors(1))
[0, 2]

smime.p7s
Description: S/MIME cryptographic signature