Mailman 3 September 2020 - NumPy-Discussion

ANN: pvlib-0.8.0 python package for solar energy modeling
by Dr. Mark Alexander Mikofski PhD Sept. 8, 2020

Sept. 8, 2020

Dear Pythonistas and Solar Energy enthusiasts, I am very happy to announce a new, major release of pvlib python, for simulating the performance of photovoltaic solar energy systems. *See what's new for v0.8.0:* * https://pvlib-python.readthedocs.io/en/stable/whatsnew.html *Releases are available from the CheeseShop and the conda-forge channel:* * https://pypi.org/project/pvlib/ * https://anaconda.org/conda-forge/pvlib-python *Read the Documentation:* * https://pvlib-python.readthedocs.io/en/stable/index.html *Report issues & contribute:* * https://github.com/pvlib/pvlib-python *Highlights:* * Because this is a major release, there are many breaking changes so please read through the release notes carefully before updating * Python-3.5 is no longer supported, SciPy-1.2.0 is now a required dependency, and the Pandas minimum version is now v0.22.0 * New functions for calculation of sky-diffuse irradiance, fitting PV module IV-curve traces to single-diode model coefficients, and accommodating terrain slope when backtracking. * Many new contributors, bug fixes, and improvements in the documentation. * Also coming soon, AirSpeed Velocity benchmarks. Stay tuned! *The development team thanks you for using pvlib python!* -- Mark Mikofski, PhD (2005) *Fiat Lux*

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NumPy Development Meeting Today - Triage Focus
by Sebastian Berg Sept. 8, 2020

Sept. 8, 2020

Hi all, Our bi-weekly triage-focused NumPy development meeting is tomorrow (Wednesday, September 9th) at 11 am Pacific Time (18:00 UTC). Everyone is invited to join in and edit the work-in-progress meeting topics and notes: https://hackmd.io/68i_JvOYQfy9ERiHgXMPvg I encourage everyone to notify us of issues or PRs that you feel should be prioritized or simply discussed briefly. Just comment on it so we can label it, or add your PR/issue to this weeks topics for discussion. Best regards Sebastian

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Cythonize and add backslash logic to "scipy.linalg.solve"
by Ilhan Polat Sept. 6, 2020

Sept. 6, 2020

Dear all, I've finally managed to draft a PR [1] for the functionality given in the title (see also "Algorithms" section of [2]). It is almost halfway done but the gist is already in place. I'm posting this to both NumPy and SciPy lists since I think it is important enough to get feedback from all parties involved.The particular detail I need to be taught is the Cython parts and fleshing out anti-patterns and code smells. Probably NumPy folks are better equipped to spot the C related issues. There is this ILP64 issue that I am aware of which would cause a bit of trouble and I would appreciate it if we can tackle it at this early stage. Thanks in advance, ilhan [1] : https://github.com/scipy/scipy/pull/12824 [2] : https://nl.mathworks.com/help/matlab/ref/mldivide.html

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setuptools/distutils merger & numpy.distutils
by Ralf Gommers Sept. 6, 2020

Sept. 6, 2020

Hi all, I spent some time looking at the fallout of the setuptools 50.0 release. There's quite a few small issues, those can/should all be worked around by pinning setuptools to a lower version. The root cause and main longer-term issue is that numpy.distutils extends and monkeypatches distutils, which mostly was fine because distutils moved super slowly and had a decent QA process. Now with setuptools, any patch goes into master and gets released to the whole wide world without any testing. The summary of that and how to deal with it I posted on https://github.com/pypa/setuptools/issues/2372 for discussion. Cheers, Ralf

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NumPy Community Meeting Wednesday
by Sebastian Berg Sept. 1, 2020

Sept. 1, 2020

Hi all, There will be a NumPy Community meeting Wednesday September 2nd at 1pm Pacific Time (20:00 UTC). Everyone is invited and encouraged to join in and edit the work-in-progress meeting topics and notes at: https://hackmd.io/76o-IxCjQX2mOXO_wwkcpg?both Best wishes Sebastian

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