2-way interop/IPC between SWI Prolog & Python

Question

There is module to call from Python (pyswip) =to=> Prolog, but is there a way to call the other way around from Prolog =to=> Python ?

I need it so I can call Spacy-NLP module from SWI-Prolog

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couldn't find if SWI supports ZeroMQ.

Answer 1

This is the sample python code in a file "c:\hello.py" that extracts the argumentq on the command line (optional). It's results are echoed to the standard output stream.

import sys
def hello():
    return 'hello world: ' + ','.join(sys.argv[1:])
if __name__ == '__main__':
    print(hello())

Here is the prolog program in file "c:\hello.pl" invoking the above python code as a process:

do :-
    process_create(path('python3.7'),
                   ['c:/hello.py', foo, bar],
                   [stdout(pipe(In))]), %output stream named In
    read_string(In, Len, X), %In=input stream to read_string/3
    write(X), nl, halt.

To activate this prolog/python combo and writting the results to the output stream

$ swipl -g do c:\hello.pl
hello world: foo,bar

Does this do what you wanted?