datastax/python-driver — pull request #200 by aholmberg (2014-10-07 22:02:34+00:00)
Title: Python SortedSet for platforms without blist

Fixes PYTHON-104
Fixes PYTHON-167
Addresses CASSANDRA-8030

For nested UDTs and collections, the set we return must accommodate
non-hashable objects (built-in set does not).