Can not find SWI-Prolog installed in ubuntu

[ghost]

When I change the code to cmd = Popen(['swipl', '--dump-runtime-variables'], stdout=PIPE), it works.

[PaulBrownMagic]

Same on CentOS, also a linux one.

[yuce]

@rylanchiu Can you give more information about your environment:

• What's the version of Ubuntu you are using?
• What's the version of SWI-prolog you are using?
• What's the Python version?
• Are you using SWI-Prolog from the package manager?

At least on 18.04 there's no problem using pyswip 0.2.7 (latest published on PyPI) with SWI-Prolog 7.6.4

@PaulBrownMagic The SWI-Prolog executable is different in latest versions. Can you check whether you have /usr/bin/swipl on your system? If not creating a symbolink link to that path may help.

[alvarogunawan]

Ran into the same problem and fixed it the same way as @rylanchiu. I'm using the following environment:

• Ubuntu 16.04.5 LTS
• SWI-Prolog version 8.0.1
• Python 3.5.2
• SWI-Prolog was installed through the package manager as described here: http://www.swi-prolog.org/build/PPA.html

Hope this helps

[JoelBender]

Similar problem, Ubuntu 16.04, SWI-Prolog version 8.0.1 for x86_64-linux, I found the .so file in the /usr/lib directory. I fixed it by creating a local lib directory and symlinking:

    $ mkdir lib
    $ pushd lib
    $ ln -s /usr/lib/swi-prolog/lib/x86_64-linux/libswipl.so .
    $ popd

I noticed that when importing like from pyswip import Prolog the usage message like 1) swipl [options] prolog-file ... [-- arg ...] is printed out. I'm obviously just starting out, but this is going to be awesome... :-)

[yuce]

Fixed by #44