Update corehq/apps/domain/calculations.py
Update corehq/apps/domain/calculations.py

Co-authored-by: Simon Kelly <7bffe82dd6d105f88ac019ebf7bae9e08b23e37c@dimagi.com>
dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq