Python library that reads JSON files of any size. The magic is in the Array and Object types. They load stuff from the file only when necessary. The library expects files to be opened in binary mode.

A fast BSON to MongoDB Extended JSON converter for Python that uses libbson. bsonjs is roughly 3-4x faster than PyMongo's json_util at decoding BSON to JSON and encoding JSON to BSON. See benchmark.py ...