Re: [Yap-users] Can't read output of a process with pipe

[Vitor S. C. <vs...@gm...>]

Hi Gokhan

You probably are using a 32  bit version of YAP. Have you tried 64 bit
or compiling with libGMP?
Your bug seems to be caused by this.

Best


Vitor

On Mon, Mar 27, 2017 at 9:40 AM, Gökhan Solak <so...@it...> wrote:
> Hello,
>
> I want to run a python process from my prolog script (YAP-6.2.2) and read
> its output formatted as a list of integers, e.g. [1,2,3,4,5,6].
>
> This is what I do:
>
> :- use_module(library(process)).
>
> :-  process_create(path(python3),
>     ['my_script.py'],
>     [stdout(pipe(Out))]),
> read(Out, OutputList),
> close(Out).
>
> However, it fails at read/2 predicate with the error:
>
> PL_unify_term: PL_int64 not supported
> Exception ignored in: <_io.TextIOWrapper name='<stdout>' mode='w'
> encoding='UTF-8'>
> BrokenPipeError: [Errno 32] Broken pipe
>
> I am sure that I can run the process correctly because with [stdout(std)]
> parameter given to process_create the program outputs [1,2,3,4,5,6] as
> expected.
>
> Weird thing is that when I change the process to output some constant_term
> it still gives the same PL_int64 error. Appending a dot to the process'
> output ([1,2,3,4,5,6].) doesn't solve the error. Using read_term/3 gives the
> same error.
>
> How can I solve this problem?
>
> This question is also asked here.
>
> Thanks in advance,
> Gökhan Solak
>
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