Hi all, 

I started working on adding scipy.datasets submodule and reviving the discussion around the deprecation of scipy.misc earlier this year with Ralf's help. Both the PRs are ready for review, and I'd request maintainers to have a look at them and share their thoughts on Github. SciPy Datasets are implemented using pooch, but the PR doesn't add pooch as a new dependency as discussed.

1. Add scipy.datasets: https://github.com/scipy/scipy/pull/15607
2. Deprecate scipy.misc: https://github.com/scipy/scipy/pull/15901 (probably clear enough and doesn't need any discussions)

One thing to be done, fairly easy to address, is to move the datasets with separate repos into the SciPy org and update the links in the registry file. Currently, all of these are under https://github.com/scipy-datasets. Some follow-ups will include getting rid of the dataset files from the SciPy repo completely once the PR is approved and merged. 

Just wanted to bring up the updates on the mailing list. Please let me know if you have any kind of feedback on Github. Thanks!


On Fri, Feb 25, 2022 at 3:58 PM Ralf Gommers <ralf.gommers@gmail.com> wrote:

On Wed, Feb 23, 2022 at 10:11 PM Stephan Hoyer <shoyer@gmail.com> wrote:
On Tue, Feb 22, 2022 at 9:20 PM Ralf Gommers <ralf.gommers@gmail.com> wrote:
If we were to keep them in SciPy, they might belong in scipy.optimize next to check_grad and approx_frime. But I don't think these functions (as written) are very useful. They have obvious computational inefficiencies and very limited functionality. I would rather point users to a fully functioning library for finite-differences like findiff: https://github.com/maroba/findiff

Thanks Stephan! I didn't hear about findiff before. Would you recommend it over https://github.com/pbrod/numdifftools?

 I haven't used either of them, it just came up in a search for finite differences in Python.

Okay, thanks Stephan. Both look good, so unless someone has practical experience and can make a recommendation for why one of these is preferred, we should probably list both in the deprecation notice.


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