Stetl

"Stetl, Streaming ETL, is an open source (GNU GPL) toolkit for the transformation (ETL) of geospatial data. Stetl is based on existing ETL tools like GDAL/OGR and XSLT. Stetl processing is driven from a configuration (.ini) file. Stetl is written in Python and in particular suited for processing GML.

Stetl basically glues together existing parsing and transformation tools like GDAL/OGR (ogr2ogr) and XSLT. By using native tools like libxml2 and libxslt (via Python lxml) Stetl is speed-optimized.

The core concepts of Stetl remain pretty simple: an input resource like a file or a database table is mapped to an output resource (also a file, a database, etc) via one or more filters. The input, filters and output are connected in a pipeline called a processing chain or Chain. This is a bit similar to a current in electrical engineering: an input flows through several filters, that each modify the current."

http://www.stetl.org/en/latest/

https://github.com/geopython/stetl