[jira] [Created] (AIRFLOW-580) Disable Logging String Formatting Style Warning in Landscape.io

["Robin Miller (JIRA)" <ji...@apache.org>]

Robin Miller created AIRFLOW-580:
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             Summary: Disable Logging String Formatting Style Warning in Landscape.io
                 Key: AIRFLOW-580
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-580
             Project: Apache Airflow
          Issue Type: Improvement
          Components: logging
         Environment: CI
            Reporter: Robin Miller
            Assignee: Robin Miller
            Priority: Trivial


After a change relating to logging, the Landscape.io formatting checks produced the warning: "Use % formatting in logging functions and pass the % parameters as arguments"

This occurred on any lines of the form:

_log.info("Some string with {} in".format(variable))

After a look around the code to identify the norm, it seems there are a lot of lines like this. Discussion on the dev email list brought up the following points:

- New style formatting is preferred for reading code.
- Old style formatting allows for a slight performance gain in the situation where the log message is ignored due to the logging level, as it can skip interpolation.
- This performance gain is likely to be very small for our use case.

As such I propose the addition of "logging-format-interpolation" to the pylint disable list in the .landscape.yml file.



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