There is not rule of math stating that + must always be commutative. It is commu...

		gizmo385 on March 6, 2019 \| parent \| context \| favorite \| on: PEP 584 – Add + and – operators to the built-in di... There is not rule of math stating that + must always be commutative. It is commutative for real numbers, yes, but there are plenty of use cases mentioned elsewhere in this discussion where + is not commutative.