Jack Ye e61e21035c fix(python): explain Function namespace import restrictions (#4982)
A plain `import ctypes.util` in a Function currently reports “dynamic
namespace access” without explaining the module restriction or a way
forward. Give blocked module imports a distinct error that names the
modules, explains the reconstructed namespace constraint, and recommends
an importable helper supplied through `code=`, `pip=`, or `conda=`.
Dynamic namespace operations also get an actionable explanation.

Document the full restrictions and the helper alternative in the
decorator and Python Functions reference. Add regression coverage for
direct imports, `from` imports, global module aliases, class Functions,
the deprecated `@udf` alias, and helpers imported normally or shipped
with `code=`. Existing import restrictions remain in place.

For example, move `ctypes.util.find_library` into
`native_diagnostics/__init__.py`, then use:

```python
import native_diagnostics
from lancedb import function


@function(code=[native_diagnostics])
def probe_library(name: str) -> str:
    return native_diagnostics.find_library(name)
```

Fixes ENT-3408.
2026-11-12 09:01:39 -08:00
2023-03-17 18:15:19 -07:00
2025-03-10 09:01:23 -07:00

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LanceDB

The Multimodal Lakehouse for AI

How to Install ✦ Detailed Documentation ✦ Tutorials and Recipes ✦ Contributors

The ultimate multimodal data platform for AI/ML applications.

LanceDB is designed for fast, scalable, and production-ready vector search. It is built on top of the Lance columnar format. You can store, index, and search over petabytes of multimodal data and vectors with ease. LanceDB is a central location where developers can build, train and analyze their AI workloads.


Demo: Multimodal Search by Keyword, Vector or with SQL

LanceDB Multimodal Search

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Key Features:

  • Fast Vector Search: Search billions of vectors in milliseconds with state-of-the-art indexing.
  • Comprehensive Search: Support for vector similarity search, full-text search and SQL.
  • Multimodal Support: Store, query and filter vectors, metadata and multimodal data (text, images, videos, point clouds, and more).
  • Advanced Features: Zero-copy, automatic versioning, manage versions of your data without needing extra infrastructure. GPU support in building vector index.

Products:

  • LanceDB Embedded (open source): 100% open source, runs in your application's process; your data can live on local disk or in object storage. No vendor lock-in.
  • LanceDB Enterprise: Production-scale distributed search, indexing, and maintenance. Plus, complete data sovereignty and security.

Ecosystem:

  • Columnar Storage: Built on the Lance columnar format for efficient storage and analytics.
  • Seamless Integration: Python, Node.js, Rust, and REST APIs for easy integration. Native Python and Javascript/Typescript support.
  • Rich Ecosystem: Integrations with LangChain 🦜️🔗, LlamaIndex 🦙, Apache-Arrow, Pandas, Polars, DuckDB and more on the way.

How to Install:

Follow the Quickstart doc to set up LanceDB locally.

API & SDK: We also support Python, Typescript and Rust SDKs

Interface Documentation
Python SDK https://lancedb.github.io/lancedb/python/python/
Typescript SDK https://lancedb.github.io/lancedb/js/globals/
Rust SDK https://docs.rs/lancedb/latest/lancedb/index.html
REST API https://docs.lancedb.com/api-reference/rest

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We welcome contributions from everyone! Whether you're a developer, researcher, or just someone who wants to help out.

If you have any suggestions or feature requests, please feel free to open an issue on GitHub or discuss it on our Discord server.

Check out the GitHub Issues if you would like to work on the features that are planned for the future. If you have any suggestions or feature requests, please feel free to open an issue on GitHub.

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Description
Developer-friendly OSS embedded retrieval library for multimodal AI. Search More; Manage Less.
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