npydump 26.2.26

CLI tool to inspect .npy and .npz files

npydump

Inspect NumPy .npy and .npz files from the command line without opening a Python REPL.

Install

pip install .

Usage

npydump data.npy
npydump data.npy --meta
npydump data.npy --head 10
npydump data.npy --slice "0:5, :, -1"
npydump data.npy --all
npydump data.npy --stat

npydump archive.npz --meta
npydump archive.npz --all
npydump archive.npz --keys a,b --head 5

npydump data.npy --format json
npydump data.npy --format yaml
npydump data.npy --format csv --out data.csv
npydump archive.npz --format csv --out out_csv

Notes

• object dtype arrays only show metadata. Data is not expanded by design.
• --stat computes common statistics over the flattened array.
• CSV export flattens each array to a single column.
• For .npz, CSV output creates one file per key in the output directory.