Files
lancedb/python
Daniel RammerandClaude Opus 4.8 6633f83f7b feat: add get_lsm_write_spec to read the installed LSM write spec
Adds `Table::get_lsm_write_spec` returning `Option<LsmWriteSpec>`, the read
counterpart to `set_lsm_write_spec` / `unset_lsm_write_spec`.

- Rust core: `NativeTable` reconstructs the spec from the MemWAL index
  details (`mem_wal_index_details`), resolving the shard column via the
  dataset schema. Read-only, so unaffected by describe_indices filtering.
- Remote: `RemoteTable` reads the `__lance_mem_wal` system index via
  `index/list` with `include_system: true` (kept out of the curated
  `list_indices` surface) and parses its `details` JSON, using the
  server-resolved `column` name.
- Python and TypeScript bindings, sync + async, with round-trip tests.

The remote path depends on lance emitting the resolved shard column name in
the MemWAL index details JSON, and on the server honoring `include_system`
on `index/list`.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-07 14:45:33 -05:00
..
2025-01-29 08:27:07 -08:00
2024-04-05 16:22:59 -07:00

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.