Set Minimum Python Version to 3.6

Engineering
1

ITK Community,

There is a need to define the minimum python version that is currently supported for building and deploying ITK.

Python 3.5 will reach its " end of life " at the end of September 2020. If there are no security patches filed for Python 3.5 after the release of Python 3.5.10, then Python 3.5 . 10 will be the final release of the 3.5 series.

Additionally, ITK python wrapping requires numpy, and numpy 1.19 (the current version) only supports python 3.6-3.8.

I propose that the minimum supported Python version is 3.6. Please provide comments regarding your support or concerns regarding this proposal.

Thanks!
Hans

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2

:+1:

Also, Python 3.9 is now out, and we are adding support for 3.9 – it is time move on from 3.5.

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