tablescope 0.2.0

A lazy table viewer with narwhals-backed query pushdown, for Marimo or Juptyer

tablescope

tablescope is a Marimo-oriented lazy table viewer. It accepts a dataframe-like object that Narwhals can normalize, keeps sort and aggregation work pushed down to the underlying engine, and renders a Solid + TanStack data grid via anywidget.

Install

pip install tablescope

Status

This is a first pass focused on:

• lazy row paging with backend pushdown
• arbitrary fraction jumps through the dataset
• per-column profile stats
• value counts for enum-like columns
• keyboard navigation in the grid

Usage

import marimo as mo
import polars as pl
import tablescope

lf = pl.scan_parquet("data.parquet")
viewer = tablescope.view(lf, page_size=100)
viewer

Release

Use the justfile to build and validate the package artifacts before uploading them to PyPI.

just check-release
just publish

Frontend build

The frontend bundle is generated from frontend/src and inlined into src/tablescope/_frontend.py.

npm install
npm run build

Python workflow

just sync
just test