can anyone share some info about internal data organization in *.npz ? Some documentation etc.. Just can\'t find anything..
Here are the docs:
That said, I would not recommend trying to read or write files in this format yourself. It's fine for writing from NumPy and reading in with NumPy again. But if you want to write or read a file from a different environment, then use a more standard format like HDF5 or NetCDF which is supported by both environments.