@@ -2080,7 +2080,10 @@ function is_provider_network {

 function _get_python_version {

     local interp=$1

     local version

-    version=$($interp -c 'import sys; print("%s.%s" % sys.version_info[0:2])')

+    # disable erroring out here, otherwise if python 3 doesn't exist we fail hard.

+    if [[ -x $(which $interp) ]]; then

+        version=$($interp -c 'import sys; print("%s.%s" % sys.version_info[0:2])')

+    fi

     echo ${version}

 }

@@ -131,11 +131,11 @@ export DISABLED_PYTHON3_PACKAGES=""

 # version of Python 3 to this variable will install the app using that

 # version of the interpreter instead of 2.7.

 _DEFAULT_PYTHON3_VERSION="$(_get_python_version python3)"

-export PYTHON3_VERSION=${PYTHON3_VERSION:-${_DEFAULT_PYTHON3_VERSION}}

+export PYTHON3_VERSION=${PYTHON3_VERSION:-${_DEFAULT_PYTHON3_VERSION:-3.5}}

 # Just to be more explicit on the Python 2 version to use.

 _DEFAULT_PYTHON2_VERSION="$(_get_python_version python2)"

-export PYTHON2_VERSION=${PYTHON2_VERSION:-${_DEFAULT_PYTHON2_VERSION}}

+export PYTHON2_VERSION=${PYTHON2_VERSION:-${_DEFAULT_PYTHON2_VERSION:-2.7}}

 # allow local overrides of env variables, including repo config

 if [[ -f $RC_DIR/localrc ]]; then