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https://issues.apache.org/jira/browse/BEAM-9372?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17047832#comment-17047832
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Valentyn Tymofieiev edited comment on BEAM-9372 at 2/28/20 5:40 PM:
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Note that some Linux distributions come with Python 3.5.1[1].
 
Users of these distributions will be affected by this change. 

A workaround would be to install a newer version of Python, for example by 
employing pyenv, or older version of Beam.

Note that Ubuntu 16.04 has reached EOL, and Python 3 is approaching EOL.

[1] https://packages.ubuntu.com/xenial/python3
[2] https://github.com/pyenv/pyenv/blob/master/README.md
[3] 
https://ubuntustudio.org/2019/04/ubuntu-studio-16-04-lts-reaches-end-of-life-eol/
[4] https://devguide.python.org/#status-of-python-branches


was (Author: tvalentyn):
Note that some Linux distributions come with Python 3.5.1[1].
 
Users of these distributions will be affected by this change. 

A workaround would be to install a newer version of Python, for example by 
employing pyenv, or older version of Beam.

Note that Ubuntu 16 has reached EOL, and Python 3 is approaching EOL.

[1] https://packages.ubuntu.com/xenial/python3
[2] https://github.com/pyenv/pyenv/blob/master/README.md
[3] 
https://ubuntustudio.org/2019/04/ubuntu-studio-16-04-lts-reaches-end-of-life-eol/
[4] https://devguide.python.org/#status-of-python-branches

> Drop support for Python 3.5 versions lower than 3.5.3
> -----------------------------------------------------
>
>                 Key: BEAM-9372
>                 URL: https://issues.apache.org/jira/browse/BEAM-9372
>             Project: Beam
>          Issue Type: Sub-task
>          Components: sdk-py-core
>            Reporter: Valentyn Tymofieiev
>            Priority: Major
>
> Supporting Python 3.5.1, 3.5.2 requires nontrivial amount of work in type 
> inference machinery, but may provide little benefit. Most recently, this 
> surfaced in [1].
> To require Python 3.5.3 and higher we need to migrate Jenkins infrastructure 
> to Python 3.5.3 (see [2]), and update python_requires section in setup.py 
> once we are ready to drop support.
>   
> https://github.com/apache/beam/pull/10821
> https://issues.apache.org/jira/browse/BEAM-8152
> cc: [~udim] [~chadrik]



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