On 29. okt. 2012, at 11:29, Radek Machulka wrote:
> Hi,
>
> is there a way how to save more arrays into single npy (npz if possible) file
> in loop? Something like:
>
> fw = open('foo.bar', 'wb')
> while foo:
> arr = np.array(bar)
> np.savez_compressed(fw, arr)
> fw.close()
>
> Or some workaround maybe? I go through hundreds of thousands arrays and can
> not keep them in memory. Yes, I can save each array into single file, but I
> would better have them all in single one.
As Pauli said, hdf5 is nicer for such things. I foresee:
import h5py
fw = h5py.File('foo.hdf5', 'w')
while foo:
arr = np.array(bar)
fw['arr'] = arr
fw.close()
Good luck
Paul
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