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https://issues.apache.org/jira/browse/AIRFLOW-3990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16783398#comment-16783398
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ASF subversion and git services commented on AIRFLOW-3990:
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Commit 717ddaf737ec1c57244377f73dd0e80e1628576a in airflow's branch
refs/heads/master from Joshua Carp
[ https://gitbox.apache.org/repos/asf?p=airflow.git;h=717ddaf ]
[AIRFLOW-3990] Compile regular expressions. (#4813)
> Use compiled regular expressions
> --------------------------------
>
> Key: AIRFLOW-3990
> URL: https://issues.apache.org/jira/browse/AIRFLOW-3990
> Project: Apache Airflow
> Issue Type: Improvement
> Reporter: Josh Carp
> Assignee: Josh Carp
> Priority: Trivial
>
> Some regular expressions are evaluated many times. To save a little time, we
> should compile regular expressions with `re.compile` in advance instead of
> potentially recompiling for each use.
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