WolframResearch/WolframClientForPython

Error "No module named 'wolframclient.evaluation'" issued

monica1131 opened this issue · 13 comments

monica1131 commented

I am trying to do some automation using Mathematica in python. I install the package but I encounter an error "No module named 'wolframclient.evaluation'". I have installed the complete package and there is a folder called evaluation in wolframclient.

arnoudbuzing commented

Can you provide the relevant code snippet that reproduces your issue?

monica1131 commented

I was going through https://reference.wolfram.com/language/WolframClientForPython/
when I try to import this command

from wolframclient.evaluation import WolframLanguageSession

I get the error I have mentioned above.

arnoudbuzing commented

Did you run pip install wolframclient successfully first?

monica1131 commented

Yes, I did and it was successful.

arnoudbuzing commented

Do you have more than one python installation, where perhaps one works with pip install and the other one does not? Are you perhaps using a very old python version that may not be supported?

monica1131 commented

I used pip3 install wolframclient

arnoudbuzing commented

And what does python --version return?

monica1131 commented

Python 2.7.16

arnoudbuzing commented

OK. You need python 3.5 or higher:

image

monica1131 commented

Ok, I agree but I use Anaconda which has python 3.6. I'm working on Jupyter Notebook

arnoudbuzing commented

I highly suspect you have multiple python installations (probably more than two?). When you run pip3 it may simply be installing it somewhere where it can not be found (for example by Anaconda). It's a little hard to debug this for me, and also outside of the scope of this repo issue tracker. If you're using a Jupyter notebook, try to check what python installation it is using, and how to install packages for that specific python.

riccardodivirgilio commented

Correct, there is something wrong with your env. I suggest to do the following:

  1. in your anaconda notebook run:
>>> import sys
>>> sys.executable
'/usr/local/opt/python/bin/python3.7'
  1. use that path to directly run pip install from cli, in order to be extra safe please specify the latest released version explicitly.
/usr/local/opt/python/bin/python3.7 -m pip install wolframclient==1.1.4

that should fix your issue, please let me know if this is not helping.

Cheers.

  • 👍2
monica1131 commented

Thank you, the error has been solved. @riccardodivirgilio and @arnoudbuzing

  • 👍1