[jira] [Assigned] (BEAM-3959) Eliminating Python "undefined names"

["Ahmet Altay (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/BEAM-3959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ahmet Altay reassigned BEAM-3959:
---------------------------------

    Assignee:     (was: Ahmet Altay)

> Eliminating Python "undefined names"
> ------------------------------------
>
>                 Key: BEAM-3959
>                 URL: https://issues.apache.org/jira/browse/BEAM-3959
>             Project: Beam
>          Issue Type: Bug
>          Components: sdk-py-core, sdk-py-harness
>            Reporter: cclauss
>            Priority: Minor
>   Original Estimate: 2m
>  Remaining Estimate: 2m
>
> My sense is that E901,E999,F821,F822,F823 are the "showstopper" flake8 issues that can halt the runtime with a SyntaxError, NameError, etc. The other flake8 issues are merely "style violations" -- useful for readability but they do not effect runtime safety.
> Work done under https://issues.apache.org/jira/browse/BEAM-3738 has enabled Jenkins to run linters on Python 3 code.  One of the advantages of the *flake8* linter is that it can detect "undefined names" in Python code so it has been added to the [Python 2|https://github.com/apache/beam/tree/master/sdks/python/run_pylint.sh] and [Python 3|https://github.com/apache/beam/tree/master/sdks/python/run_mini_py3lint.sh] test runs.
> https://github.com/apache/beam/pull/4798 currently lists 23 undefined names when flake8 is run under Python 3.  Solutions to some of these undefined names can be found in:
> * https://github.com/apache/beam/pull/4561
> * https://github.com/apache/beam/pull/4774
> * https://github.com/apache/beam/pull/4820
> Once the Beam codebase can pass a flake8 F821 test with no undefined names, then F821 should be added to the the other "showstopper" issues as described in https://github.com/apache/beam/pull/4798



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