[Numpy-discussion] ANN: NumPy 1.7.0b2 release
Charles R Harris
Mon Sep 24 16:47:37 CDT 2012
On Mon, Sep 24, 2012 at 2:25 PM, Frédéric Bastien <firstname.lastname@example.org> wrote:
> I tested this new beta on Theano and discovered an interface change
> that was not there in the beta 1.
> New behavior:
> Old behavior:
> This break some Theano code that look like this:
> import numpy
> out = numpy.zeros(out_shape, int)
> for i in numpy.ndindex(*shape):
> out[i] = random_state.permutation(5)
> I suppose this is an regression as the only mention of ndindex in the
> first email of this change is that it is faster.
I think this problem has been brought up on the list. It is interesting
that it turned up after the first beta. Could you do a bisection to
discover which commit is responsible?
> There is a second "regression" in ndindex This was working in the
> past, but it raise an ValueError now:
> But If I call numpy.ndindex(2,1,1,1)
> The documentation do not talk about receiving a tuple as input. I
> already make a commit to change Theano code to make it work. But this
> could break other people code. It is up to you to decide if you want
> this, but a warning in the release note would be great to help people
> know that the old not documented behavior changed.
> Do you know if the first change is expected? This will probably cause
> bad results in some people code if you intended this change.
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