I just noticed that Set([[], []]).cardinality() yields 2. In earlier versions, a TypeError: unhashable type: 'list' was raised.
I think the behaviour was modified in https://trac.sagemath.org/ticket/22597. Is this intended? It seems to me that it would be safer if cardinality would raise an error... Martin -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
