On Thu, Oct 21, 2010 at 2:47 PM, Pauli Virtanen <p...@iki.fi> wrote: > Thu, 21 Oct 2010 14:25:24 -0700, Mark Wiebe wrote: > [clip] > > That sounds like it could be tricky to handle correctly, especially > > since it should probably work to compare Fortran-order arrays with > > non-Fortran ones. > > > > Does anything actually depend on this behavior? Maybe it's something > > that could change? > > I believe nothing in Numpy or Scipy depends on that. The main question is > how much of 3rd party code is likely to use this feature. > > I suppose this quirk is not widely relied on, and as far as I know, the > behavior has not been documented. For instance, Travis's Guide to Numpy > says (on subdtype): "If a field whose dtype object has this attribute is > retrieved, then the extra dimensions implied by the shape are tacked on to > the end of the retrieved array." > > IMO, it should be possible to change this with little prior notice. > > A can of worms :)
I found the commit where Travis introduced the behaviour: http://github.com/numpy/numpy/commit/2fd136eb7977dd5172eb92d173a7c39921b0cf98 http://projects.scipy.org/numpy/changeset/2116 I didn't find any discussion in the mailing list or a trac ticket, so hopefully Travis could elaborate on it? -Mark
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