Terry Reedy wrote:
Documenting the problem properly would mean changing the set documentation ... from their current math set based definitions to implementation based definitions
It could be documented that the mathematical definitions hold only if the equality relations between all the elements involved are transitive, and leave the semantics in other cases undefined. Then in the Decimal module it could be warned that the equality relations between int-float and int-Decimal are not transitive, perhaps noting that this can cause problems with sets and dicts. -- Greg -- http://mail.python.org/mailman/listinfo/python-list
