id summary reporter owner description type status component version severity resolution keywords cc stage has_patch needs_docs needs_tests needs_better_patch easy ui_ux 15684 Template won't express a numpy matrix 'sum' attribute Yeago nobody Apollo13 did some digging and says: reason is that template.base catches only TypeError, AttributeError, KeyError in current = current[bit] where numpy raises a ValueError closed Template system 1.3-rc needsinfo numpy subsume@… Unreviewed 0 0 0 0 0 0