This is a fix for https://issues.apache.org/jira/browse/AIRFLOW-3009
After pip-installing Airflow from source, the following warning message appears upon entering any airflow command from the prompt: ``` /usr/lib/python3.7/site-packages/airflow/models.py:29: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop workingfrom collections import namedtuple, defaultdict, Hashable ``` [ Full content available at: https://github.com/apache/incubator-airflow/pull/3849 ] This message was relayed via gitbox.apache.org for [email protected]
