[Numpy-discussion] numpy pickling problem - python 2 vs. python 3

Julian Taylor jtaylor.debian at googlemail.com
Fri Mar 6 18:29:04 EST 2015

On 07.03.2015 00:20, Pauli Virtanen wrote:
> 06.03.2015, 22:43, Eric Firing kirjoitti:
>> On 2015/03/06 10:23 AM, Pauli Virtanen wrote:
>>> 06.03.2015, 20:00, Benjamin Root kirjoitti:
>>>> A slightly different way to look at this is one of sharing data. If I am
>>>> working on a system with 3.4 and I want to share data with others who may
>>>> be using a mix of 2.7 and 3.3 systems, this problem makes npz format much
>>>> less attractive.
>>> pickle is used in npy files only if there are object arrays in them.
>>> Of course, savez could just decline saving object arrays.
>> Or issue a prominent warning.
> https://github.com/numpy/numpy/pull/5641

I think the ship for a warning has long sailed. At this point its
probably more an annoyance for python3 users and will not prevent many
more python2 users from saving files that can't be loaded into python3.

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