[Numpy-discussion] adding an attribute to an nd-array

[Stefan v. d. W. <st...@su...>]

A quick question on extending numpy arrays: is it possible to easily
add an attribute to an ndarray?

With Python-defined classes one can do

class X(object):
    pass

x =3D X()
x.foo =3D 'bar'

but with ndarrays you get

x =3D N.array([1,2,3])
x.foo =3D 'bar'

AttributeError: 'numpy.ndarray' object has no attribute 'foo'

Is there an easy way around this (without writing a C extension)?

Thanks for any advice.
St=E9fan