lancedb-gatefixer[bot]
741cb9ad4e
Remote Python connections inherited the unsupported-operation stubs for `namespace_exists` and `table_exists`, so both raised `NotImplementedError` even when namespace and table operations worked. Add the missing remote overrides, async methods, and PyO3 bindings using the existing namespace describe and table open paths. Only an explicit not-found result returns `False`; permission, transport, and server errors propagate. This preserves authentication, dynamic headers, retries, and nested namespace handling, and rechecks cached tables before reporting that they exist. The async namespace helper also recognizes native `NamespaceNotFound` errors so missing local namespaces return `False`. The table and namespace guides document Python remote support and distinguish it from the unsupported `exists` routes used by direct REST namespace clients. Validation: - All 40 focused regression cases pass, covering successful and missing lookups, local and remote namespaces, dynamic headers, permission/server errors, invalid table identifiers, and cached tables that disappear. - The original inherited stubs reproduce the reported `NotImplementedError`; the local namespace regression reproduced the native missing-namespace `RuntimeError` before its fix. - Full remote connection suite: 255 passed. Local namespace tests: 14 passed. - `cargo clippy --quiet -p lancedb-python --features remote --lib`, `cargo fmt --all`, Python Ruff lint, and Python formatting checks pass. - Root `ruff check .` reports 48 existing errors in documentation examples under `docs/web-tests`; the Python subtree passes and those unrelated files are unchanged. Fixes #4722 <!-- lance-gatekeeper-fix:v1 agent=4d369a0681756fdb5a8b35853d7f5607 generation=1 --> --------- Co-authored-by: Gatefixer <313497061+lancedb-gatefixer[bot]@users.noreply.github.com>
LanceDB Documentation
For website guides in docs/web, start with
Documentation in CONTRIBUTING.md. That
covers editing pages, generated examples, previews, availability and drafts.
This page covers the SDK reference in docs/src, built with MkDocs. Its
GitHub Actions workflow builds and deploys on
pushes to main, so it can include unreleased APIs. That is separate from the
release editions of the Mintlify website.
Building the docs
Setup
- Install LanceDB Python. See setup in Python contributing guide.
Run
make developto install the Python package. - Install documentation dependencies. From LanceDB repo root:
pip install -r docs/requirements.txt
Preview the docs
Run these commands from the LanceDB repository root. The subshell changes into
docs to load mkdocs.yml, while leaving your shell in the repository root.
(cd docs && PYTHONPATH=. mkdocs serve)
If you want to just generate the HTML files:
(cd docs && PYTHONPATH=. mkdocs build)
If successful, you should see a docs/site directory in the repository root that
you can verify locally.
Adding examples
To make sure examples are correct, we put examples in test files so they can be run as part of our test suites.
You can see the tests are at:
- Python:
python/python/tests/docs - Typescript:
nodejs/examples/
Checking python examples
cd python
pytest -vv python/tests/docs
Checking typescript examples
The examples depend on @lancedb/lancedb at file:../dist, so the package must be
built before running the tests. This uses pnpm; see the
Typescript contributing guide for the toolchain setup.
pushd nodejs
pnpm install
pnpm build
popd
Then you can run the examples by going to the nodejs/examples directory, which is a
separate pnpm package with its own lockfile:
pushd nodejs/examples
pnpm install
pnpm test
popd
API documentation
Python
The Python API documentation is organized based on the file docs/src/python/python.md.
We manually add entries there so we can control the organization of the reference page.
However, this means any new types must be manually added to the file. No additional
steps are needed to generate the API documentation.
Typescript
The typescript API documentation is generated from the typescript source code using typedoc.
When new APIs are added, you must manually re-run the typedoc command to update the API documentation. The new files should be checked into the repository.
pushd nodejs
# `pnpm docs` would invoke pnpm's built-in `docs` command, not the script.
pnpm run docs
popd