[jira] [Updated] (BEAM-8350) Upgrade to pylint 2.4

["Ismaël Mejía (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/BEAM-8350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ismaël Mejía updated BEAM-8350:
-------------------------------
    Status: Open  (was: Triage Needed)

> Upgrade to pylint 2.4
> ---------------------
>
>                 Key: BEAM-8350
>                 URL: https://issues.apache.org/jira/browse/BEAM-8350
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-py-core
>            Reporter: Chad Dombrova
>            Assignee: Chad Dombrova
>            Priority: Major
>          Time Spent: 2h
>  Remaining Estimate: 0h
>
> pylint 2.4 provides a number of new features and fixes, but the most important/pressing one for me is that 2.4 adds support for understanding python type annotations, which fixes a bunch of spurious unused import errors in the PR I'm working on for BEAM-7746.
> As of 2.0, pylint dropped support for running tests in python2, so to make the upgrade we have to move our lint jobs to python3.  Doing so will put pylint into "python3-mode" and there is not an option to run in python2-compatible mode.  That said, the beam code is intended to be python3 compatible, so in practice, performing a python3 lint on the Beam code-base is perfectly safe.  The primary risk of doing this is that someone introduces a python-3 only change that breaks python2, but these would largely be syntax errors that would be immediately caught by the unit and integration tests.



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