This is not directly relevant here, but has anyone looked into oamap ( https://github.com/diana-hep/oamap ), which is capable of using numba to compile python functions which traverse nested data structures down to the basic leaf nodes, without creating intermediate python objects. Then the person doing the analysis may not need to go to C++ at all. oamap has POC loaders for arrow and parquet, but it’s original focus was ROOT, from the high-energy physics world.
— Martin Durant martin.dur...@utoronto.ca
