ERROR: Python 3 is not supported by the Google Cloud SDK. Please use a Python 2.x version that is 2.6 or greater. If you have a compatible Python interpreter insta
I had the same issue so I did a little change in the dev_appserver.py. This file is in the following path :
dev_appserver.py
google-cloud-sdk/bin
change the shebang from /usr/bin/env python to /usr/bin/env python2
/usr/bin/env python
/usr/bin/env python2