[Numpy-discussion] Problem with concatenate and object arrays
Matthew Brett
matthew.brett at gmail.com
Tue Sep 5 09:34:58 EDT 2006
Hi,
> This is a result of PyArray_FromAny changing when object arrays are
> explicitly requested (which they are in this case --- although behind
> the scenes).
Hmm - I think I am hitting a related bug/feature/surprising change in
behavior, which is showing up rather obscurely in a failure of the
scipy.io matlab loading tests:
http://projects.scipy.org/scipy/scipy/ticket/258
Here's the change I wasn't expecting, present with current SVN:
a = arange(2)
b = arange(1)
c = array([a, b], dtype=object)
c
->
array([[0, 1],
[0, 0]], dtype=object)
On a previous version of numpy (1.02b.dev2975) I get the answer I was expecting:
array([[0], [0 1]], dtype=object)
Best,
Matthew
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