https://stackoverflow.com/questions/5087831/how-should-i-set-the-default-python-version-in-windows
- Install Python 3 on Cygwin
- Go to cygwin\bin, and overwrite python with python3
- export PYTHONPATH="/usr/lib/python3.5:/opt/ansible/lib"
https://stackoverflow.com/questions/5087831/how-should-i-set-the-default-python-version-in-windows