Maybe instead of tobytes() you can use memoryview().
On Sun, Oct 10, 2021 at 08:21 Facundo Batista <facundobati...@gmail.com>
wrote:
> El dom, 10 de oct. de 2021 a la(s) 11:50, Serhiy Storchaka
> (storch...@gmail.com) escribió:
> >
> > 10.10.21 17:19, Facundo Batista пише:
> > > I have a long list of nums (several millions), ended up doing the
> following:
> > >
> > > struct.pack_into(f'{len(nums)}Q', buf, 0, *nums)
> >
> > Why not use array('Q', nums)?
>
> You mean `array` from the `array` module? The only way I see using it
> is like the following:
>
> >>> shm = shared_memory.SharedMemory(create=True, size=total_size)
> >>> a = array.array('Q', nums)
> >>> shm.buf[l_offset:r_offset] = a.tobytes()
>
> But I don't like it because of the `tobytes` call, which will produce
> a huge bytearray only to insert it in the shared memory buffer.
>
> That's why I liked `pack_into`, because it will write directly into
> the memory view.
>
> Or I'm missing something?
>
> Thanks!
>
> --
> . Facundo
>
> Blog: http://www.taniquetil.com.ar/plog/
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