Python 3

[ocefpaf]

@JiaweiZhuang asked in pydata/xarray#486 (comment)

@ocefpaf Any plan for Python3-compatible ESMPy? I only see Python2.7 here: https://github.com/conda-forge/esmpy-feedstock

@bekozi is there a py3k version released? I confess I lost track of the package (using mostly the nco wrapped version 😄)

[bekozi]

Good morning. There is a Python 3.5/3.6 version of ESMPy available in our group's dev-esmf Anaconda channel: https://anaconda.org/nesii/repo/files?type=any&label=dev-esmf. Once there is an official ESMF release the conda-forge channel can be updated - not sure when that will be.

[ocefpaf]

We can put the dev in conda-forge under a label like main/dev to make it easier for users and avoid multiple channels in the .condarc file. If you are interested in that let me know and we can try it here.

[bekozi]

Sure, no issues with that on this end. We'll probably continue to maintain our channel regardless, but it makes sense to simplify channel requirements. ESMF is on a pretty slow release cycle but has a strong test harness. Hence, it would be great to get beta snapshots out there if possible!

[ocefpaf]

We'll probably continue to maintain our channel regardless

Sure. One of the goals of conda-forge is not to substitute all other channels, but to share recipes and keep them in sync (although that sometimes is quite the challenge).

I'll take a look into updating the recipe here and adding the dev label later today.

[bekozi]

although that sometimes is quite the challenge

Doing great from what I can tell.

Thanks for making the initial changes.

[JiaweiZhuang]

@bekozi Great! It would be very useful to support Mac (I know Windows is tricker).

On the ESMPy website I can only find:

• On conda-forge, only Python2.7, but include Linux and Mac
• On NESII, include Python2.7, 3.5, 3.6, but only Linux

[bekozi]

It would be very useful to support Mac (I know Windows is tricker).

Once the development builds are enabled in conda-forge Mac + Python 3 will be supported. You are correct that Windows is trickier. 😄 We support MingW and Cygwin. I know of an effort to get ESMF running in Windows natively. If that project bears fruit and makes it back into ESMF, it will definitely be pushed upstream!

[jhamman]

@bekozi - did this ever get resolved? Would love to see this get finalized in conda-forge if possible.

[bekozi]

It is nearly, nearly there. #10 will take care of it in conda-forge. In the meantime, there are Python 3 builds in -c nesii -c conda-forge.

[bekozi]

Python 3 builds for ESMPy are in.