Dask: Python 3.4 support timeline

[jakirkham]

Raising this to figure out when we want to drop Python 3.4. FWIW xarray recently dropped Python 3.4. scikit-image still supports Python 3.4. hyperspy doesn't appears to be Python 3.5+. Not sure what other packages our downstream that are using it. Anyways just raising this for discussion at this point.

[mrocklin]

cc @stefanv do you all have plans here? We'd like to drop this soon if
possible.

On Fri, Jul 20, 2018 at 4:51 PM, jakirkham [e-mail] wrote:

Raising this to figure out when we want to drop Python 3.4. FWIW xarray
recently dropped Python 3.4
https://github.com/pydata/xarray/commit/74625d463ec71ac6f4a3642d3385bd9cbf8381ce.
scikit-image still supports Python 3.4. hyperspy doesn't appears to be
Python 3.5+. Not sure what other packages our downstream that are using it.
Anyways just raising this for discussion at this point.

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[stefanv]

We're done with 3.4 in scikit-image, as of our last release.

[mrocklin]

I recommend that we drop 3.4

On Fri, Jul 20, 2018 at 6:05 PM, Stefan van der Walt <
[email protected]> wrote:

We're done with 3.4 in scikit-image, as of our last release.

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[hugovk]

Here's the pip installs for dask from PyPI for June 2018, showing low numbers for 3.4:

| python_version | percent | download_count |
| -------------- | ------: | -------------: |
| 3.6 | 46.24% | 54,143 |
| 2.7 | 40.93% | 47,916 |
| 3.5 | 11.72% | 13,720 |
| 3.4 | 1.02% | 1,198 |
| 3.7 | 0.08% | 98 |
| 3.3 | 0.00% | 3 |
| 2.6 | 0.00% | 1 |
| Total | | 117,079 |

Source: pypinfo --start-date 2018-06-01 --end-date 2018-06-30 --percent --markdown dask pyversion

[mrocklin]

Cool. That's very helpful. Thank you Hugo!

On Sat, Jul 21, 2018 at 7:00 AM, Hugo [e-mail] wrote:

Here's the pip installs for dask from PyPI for June 2018, showing low
numbers for 3.4:
python_version percent download_count
3.6 46.24% 54,143
2.7 40.93% 47,916
3.5 11.72% 13,720
3.4 1.02% 1,198
3.7 0.08% 98
3.3 0.00% 3
2.6 0.00% 1
Total 117,079

Source: pypinfo --start-date 2018-06-01 --end-date 2018-06-30 --percent
--markdown dask pyversion

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