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This mimics CREATE TABLE IF NOT EXISTS behavior. We add `db.create_table(..., exist_ok=True)` parameter. By default it is set to False, so trying to create a table with the same name will raise an exception. If set to True, then it only opens the table if it already exists. If you pass in a schema, it will be checked against the existing table to make sure you get what you want. If you pass in data, it will NOT be added to the existing table.
LanceDB
A Python library for LanceDB.
Installation
pip install 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
Create a virtual environment and activate it:
python -m venv venv
. ./venv/bin/activate
Install the necessary packages:
python -m pip install .
To run the unit tests:
pytest
To run linter and automatically fix all errors:
ruff format python
ruff --fix python
If any packages are missing, install them with:
pip install <PACKAGE_NAME>
For Windows users, there may be errors when installing packages, so these commands may be helpful:
Activate the virtual environment:
. .\venv\Scripts\activate
You may need to run the installs separately:
pip install -e .[tests]
pip install -e .[dev]
tantivy requires rust to be installed, so install it with conda, as it doesn't support windows installation:
pip install wheel
pip install cargo
conda install rust
pip install tantivy
To run the unit tests:
pytest