olap-cube
TinyOlap is a light-weight, in-process, in-memory, multi-dimensional, model-first OLAP engine for planning, budgeting, reporting, analysis and many other numerical purposes, written in plain Python.
Open Mining Language (OML), language to preprocess Olap Cubes
BI Application Server written by Python and Riak
Build and deploy automated to SQL Server Analysis Services (SSAS) with Python.