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[Patrick Riesen <priesen@xxxxxxxxxxxxxxx>]

hello dolfin developers

I write out a std::vector in XML file format from cpp. Can I read the 
XML file in again in python and construct a numpy array?
I know how to do it with a dolfin Vector, but is it possible with a 
std::vector<double>? I could not figure out the syntax, i tried

# this is ok
fn = File("data/norm.xml")
div_vec = d.Vector()
a = n.array((11,1))

# fails
fn >> a
# fails
fn >> div_vec.array()


thanks for the help,

patrick