Raymond Hettinger wrote:
Instead the choice was to implement the four methods as multiset operations. As such, they need to correspond to regular set operations.
Seems to me you're trying to make one data type do the work of two, and ending up with something inconsistent. I think you should be providing two types: one is a multiset, which disallows negative counts altogether; the other behaves like a sparse vector with appropriate arithmetic operations. -- Greg -- http://mail.python.org/mailman/listinfo/python-list
