jupyterlab-contrib/jupyterlab-variableInspector

Health v2 · maintenance only

Adoption not part of the score

1168 stars · 100 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A JupyterLab extension that displays currently used variables and their values from running kernels in a side panel. It supports notebooks and consoles, with datagrid inspection of matrices and interactive viewing of Jupyter Widgets.

Use cases

• inspect variables in jupyterlab like in spyder or rstudio
• view dataframe contents while running a notebook
• debug variable values in a jupyter kernel
• browse matrices in a datagrid viewer
• inspect ipywidgets interactively
• see variable values for R or scala kernels

When to choose

• you work in JupyterLab and want an IDE-style variable explorer
• you need to inspect pandas/numpy objects, tensors, or ipywidgets inline
• you use Python, R, or Scala (almond) kernels

When to avoid

• you need to inspect very large dataframes or matrices, since content is sent to the browser and can slow it down or consume lots of memory
• you use Jupyter Notebook (classic) rather than JupyterLab >= 3.0
• you need kernels other than Python, R, or Scala

Facets

plugin · maturity active

developer-tools data-science data-visualization data-science developer-tools python browser cross-platform jupyterlab-extension variable-inspector notebooks python r scala ipywidgets web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="jupyterlab-contrib/jupyterlab-variableInspector")