[Numpy-discussion] NPZ format

[Francesc Alted]

Hi,

I'm going to give a seminar about serialization, and I'd like to 
describe the .npy format.  I noticed that there is a variant of it 
called .npz that can pack several arrays in one single file.

However, .npz does not use compression at all and I'm wondering what's 
the reason.  I suppose that this is because you don't want to loose the 
possibility to memmap saved arrays, but can someone confirm this?

Thanks,

-- 
Francesc Alted