@@ -446,6 +446,16 @@ Python bindings added when they are enabled.

      ADDITIONAL_VENV_PACKAGES="python-foo, python-bar"

+Use python3

+------------

+

+By default ``stack.sh`` uses python2 (the exact version set by the

+``PYTHON2_VERSION``). This can be overriden so devstack will run

+python3 (the exact version set by ``PYTHON3_VERSION``).

+

+  ::

+

+     USE_PYTHON3=True

 A clean install every time

 --------------------------