@@ -107,7 +107,7 @@ function remove_disabled_extensions {

 function image_size_in_gib {

     local size

     size=$(openstack image show $1 -c size -f value)

-    echo $size | python -c "import math; import six; print(int(math.ceil(float(int(six.moves.input()) / 1024.0 ** 3))))"

+    echo $size | python3 -c "import math; print(int(math.ceil(float(int(input()) / 1024.0 ** 3))))"

 }

 # configure_tempest() - Set config files, create data dirs, etc