On Thu, Nov 8, 2018 at 6:14 PM Nils Bruin <nbr...@sfu.ca> wrote:
>
> On Wednesday, November 7, 2018 at 11:09:50 PM UTC-8, vdelecroix wrote:
>>
>> Python 3 introduced randomness in their base hashing functions. That
>> impact strings.
>>
>> $ python -c 'print(hash("hello Daniel!"))'
>> -4203807413548925149
>> $ python -c 'print(hash("hello Daniel!"))'
>> 7756578277334792321
>>
> Ouch. That's good to know. I'm sure we'll find some pickles that store values
> in dicts, assuming they're cached hash values. I guess any of the parallel
> machinery that uses "fork" will be fine, but multiprocessing that starts up
> worker processes as fresh python instances will also be vulnerable to
> assumptions that hashes are deterministic.
It can be disabled, see
https://docs.python.org/3/using/cmdline.html#envvar-PYTHONHASHSEED
>
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