metta-polars

polars as a frame library of the MeTTa Python seat.

pymetta names no third-party library. This package is one row against the frame point, and the seat finds it exactly as it finds a package written by somebody else: through the metta.extensions entry point, loaded at the first dispatch that has no answer without it, or through import metta_polars, whose module body registers the same rows.

pip install metta-polars          # or: pip install 'pymetta[dataframes]'

The frame row declares polars' native iter_rows() extraction. frame.metta.into(space, "row") reads and writes the whole frame in one transaction. Foreign stores require transactional writes; nested ingestion also requires provider savepoints. Input and cleanup failures roll back the load before its transaction commits.

Its tests are in tests/, and they run in the workspace suite:

sh extensions/python/test.sh ext/metta-polars