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Will JonesandClaude Opus 4.8
6858a9370f
DataFusion 54 (pulled in by lance v9) replaced its hashing RandomState (ahash -> foldhash), which changes hash-based split output. Update the hardcoded expectations in test_hash_split, and hash a high-cardinality column in the Python test_split_hash_with_discard so its discard behavior is stable. The new lance file reader returns no batches for an empty file (the old read_record_batch returned a single empty batch), so concat_batches on batches[0] panicked when a shuffle output file was empty. Build the batch from the known schema instead, which handles the empty case. Bump the datafusion Python package to v54 to match the bundled DataFusion, avoiding an FFI ABI mismatch in register_table_provider. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
LanceDB Python SDK
A Python library for LanceDB.
Installation
pip install lancedb
Preview Releases
Stable releases are created about every 2 weeks. For the latest features and bug fixes, you can install the preview release. These releases receive the same level of testing as stable releases, but are not guaranteed to be available for more than 6 months after they are released. Once your application is stable, we recommend switching to stable releases.
pip install --pre --extra-index-url https://pypi.fury.io/lancedb/ lancedb
Usage
Basic Example
import lancedb
db = lancedb.connect('<PATH_TO_LANCEDB_DATASET>')
table = db.open_table('my_table')
results = table.search([0.1, 0.3]).limit(20).to_list()
print(results)
Development
See CONTRIBUTING.md for information on how to contribute to LanceDB.