xinbinhuang opened a new pull request #6860: [AIRFLOW-6311] Remove python2 from codebase URL: https://github.com/apache/airflow/pull/6860 Make sure you have checked _all_ steps below. ### Jira - [x] My PR addresses the following [Airflow Jira](https://issues.apache.org/jira/browse/AIRFLOW/) issues and references them in the PR title. For example, "\[AIRFLOW-XXX\] My Airflow PR" - https://issues.apache.org/jira/projects/AIRFLOW/issues/AIRFLOW-6311 ### Description - Remove workaround for python2 `newstr` from settings.py - Change default python interpreter for dataflow to python3, given that support is mostly finished. and they are also about to sunset python2 in 2020, ( thought the timeline has not been set yet) - Dataflow python3 support roadmap: https://issues.apache.org/jira/browse/BEAM-1251#comment-16979381] - Python2 sunset schedule: https://issues.apache.org/jira/browse/BEAM-8371 - Apache-beam sign (without detailed timeline) on https://python3statement.org/ - It depends on when will this be merged in. We may also drop the `py_interpreter` all together
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