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https://issues.apache.org/jira/browse/SPARK-34943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17314405#comment-17314405
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Haejoon Lee commented on SPARK-34943:
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[~hyukjin.kwon] Updated. Thanks!
> Upgrade flake8 to 3.8.0 or above in Jenkins
> -------------------------------------------
>
> Key: SPARK-34943
> URL: https://issues.apache.org/jira/browse/SPARK-34943
> Project: Spark
> Issue Type: Bug
> Components: PySpark
> Affects Versions: 3.2.0
> Reporter: Haejoon Lee
> Assignee: Shane Knapp
> Priority: Major
>
> In flake8 < 3.8.0, F401 error occurs for imports in if statements when
> TYPE_CHECKING is True. However, TYPE_CHECKING is always False at runtime, so
> there is no need to treat it as an error in static analysis.
> Since this behavior is fixed In flake8 >= 3.8.0, we should upgrade the flake8
> installed in Jenkins to 3.8.0 or above. Otherwise, it occurs F401 error for
> several lines in pandas-on-PySpark that uses TYPE_CHECKING.
> And also we might update the {{MINIMUM_FLAKE8}} in the {{lint-python}} from
> 3.5.0 to 3.8.0.
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