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05756f0bbf
Fixes #2934 ## Problem Passing a `RemoteTable` to `permutation_builder()` raises a cryptic `AttributeError`: ``` AttributeError: 'RemoteTable' object has no attribute '_inner' ``` This leaves users confused about what went wrong and why. ## Root Cause `PermutationBuilder.__init__()` calls `async_permutation_builder(table)` which accesses `table._inner` — the underlying Rust Lance table object. `RemoteTable` connects to LanceDB Cloud/Enterprise and does not have a local `_inner` attribute, making permutations fundamentally unsupported on remote tables. ## Solution Added an early check in `PermutationBuilder.__init__()` that verifies the table has `_inner` before calling the Rust function, raising a clear `TypeError` with an explanation of why permutations don't work on remote tables. ## Verification - Syntax validated with `ast.parse()` - Structural verification: single call site (`permutation_builder()`), guard placed before Rust FFI call - Error message tested with mock: `MockRemoteTable()` correctly triggers `TypeError` ## Changelog | Date | Change | Author | |------|--------|--------| | 2026-06-28 | Added remote table guard in PermutationBuilder.__init__ | rtmalikian | ### Files Changed - python/python/lancedb/permutation.py — Added `hasattr(table, "_inner")` check with clear error --- **About the Author:** Raphael Malikian — Clinical AI Solutions Architect. I specialise in building and fixing AI/ML systems for healthcare, including vector databases, RAG pipelines, and clinical NLP. If you need help with your project or think I can add value to your organisation, feel free to reach out — I'd love to connect. 📧 rtmalikian@gmail.com 🔗 GitHub: https://github.com/rtmalikian 🔗 LinkedIn: http://www.linkedin.com/in/raphael-t-malikian-mbbs-bsc-hons-71075436a --- **Disclosure:** This code was developed with assistance from deepseek-v4-pro (DeepSeek) via Hermes Agent (Nous Research). All changes were reviewed, tested against the actual codebase, and verified for correctness. Signed-off-by: rtmalikian <rtmalikian@gmail.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.