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04948fc4f6
Per the interface design: computed columns are parameters on the
existing add_columns operation, not a separate method.
- BaseTable::add_computed_columns((name, sql_type) pairs + a f(args)
expression) -- default NotSupported; RemoteTable posts 'computed'
entries to the existing /v1/table/{id}/add_columns route.
- python add_columns gains computed= on LanceTable, RemoteTable, and
AsyncTable: tbl.add_columns(computed={'doubled': ('FLOAT',
'double_it(val)')}); grouped by expression so struct-returning
functions' columns land adjacently.
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.