# Revision history [back]

### RingElement and Set

How can I create a class which derives from RingElement and Set?

### RingElement and SetSet properties in a single class?

How can I create a class which derives from RingElement and Set?

### RingElement and Set properties in Constructing a single class?Ring of sets?

How can I create a class which derives from RingElement and Set?

### Constructing a Ring of sets?

How can I create a class which derives from RingElement and Set?

It seems I get the standard:

TypeError: Error when calling the metaclass bases
multiple bases have instance lay-out conflict