lance-namespace

import lance_namespace import os # Configure a root path for the directory-based namespace # For persistent storage, change this to a desired directory or cloud path (e.g., s3://my-bucket/data) root_path = os.environ.get('LANCE_ROOT_PATH', '/tmp/lance_namespace_data') # Connect to a directory-based namespace # This creates a namespace instance that manages tables within the specified directory try: ns = lance_namespace.connect("dir", {"root": root_path}) print(f"Successfully connected to Lance Namespace at: {root_path}") # Example: List tables (initially empty or existing tables) tables = ns.list_tables() print(f"Tables in namespace: {tables}") # In a real scenario, you would then use `ns` to declare, create, or manage Lance tables. # For instance, to declare a new table (requires `lance` package for actual data operations): # from lance.client import Client # client = Client(f"file://{root_path}") # table_name = "my_example_table" # try: # table_uri = ns.declare_table(table_name, "table_uri_placeholder") # print(f"Declared table '{table_name}' with URI: {table_uri}") # except Exception as e: # print(f"Could not declare table '{table_name}': {e}") except Exception as e: print(f"Error connecting to Lance Namespace: {e}") print("Ensure the 'lance' package is installed for native implementations and required dependencies are met.") # Clean up the temporary directory if it was created # import shutil # if root_path.startswith('/tmp/') and os.path.exists(root_path): # shutil.rmtree(root_path) # print(f"Cleaned up temporary directory: {root_path}")