title: How do I select my Airflow or Python version with Cloud Composer?
body: <p>I am using <a href="https://cloud.google.com/composer" rel="noreferrer">Cloud Composer</a> and I noticed that it selects the version of <a href="http://airflow.apache.org" rel="noreferrer">Apache Airflow</a> and Python (2.7.x) for me. I want to use a different version of Airflow and/or Python. How can I change this?</p>