dx 2.0.1a202604151604

nteract/dx — efficient display and blob-store uploads from Python kernels

dx

Efficient display and blob-store uploads for Python kernels running under nteract.

dx lets a Python kernel push bytes directly to the nteract daemon's blob store via a dedicated Jupyter comm, bypassing the IOPub "raw bytes" anti-pattern. Display bundles carry a tiny reference MIME (application/vnd.nteract.blob-ref+json) instead of megabytes of parquet/image/video data.

Usage

import dx
dx.install()

import pandas as pd
df = pd.read_parquet("big.parquet")
df  # rendered via the sift parquet renderer from a blob reference

Low-level:

ref = dx.put(open("image.png", "rb").read(), content_type="image/png")
dx.display_blob_ref(ref, content_type="image/png")

See docs/superpowers/specs/2026-04-13-nteract-dx-design.md for the protocol.

In vanilla Jupyter or plain python

dx.install() is a no-op when no nteract runtime agent is reachable. dx.display(df) falls back to raw-bytes display, and dx.put(...) raises DxNoAgentError. The library is safe to import anywhere.