Linux Install fails; unable to find PySide/PySide2

#1 · 22. Januar 2020, 0:30

Greetings,

I'm attempting to install v1.2.0 and receive the following message when running the install script;

$ sudo ./Prism_setup_Linux.sh
File "Scripts/PrismInstaller.py", line 335
print ex
^
SyntaxError: Missing parentheses in call to 'print'. Did you mean print(ex)?
Scripts/PrismCore.py:35: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
import sys, os, threading, shutil, time, socket, traceback, imp, platform, random, errno, stat
Traceback (most recent call last):
File "Scripts/PrismCore.py", line 48, in <module>
from PySide2.QtCore import *
ModuleNotFoundError: No module named 'PySide2'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "Scripts/PrismCore.py", line 57, in <module>
from PySide.QtCore import *
ModuleNotFoundError: No module named 'PySide'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "Scripts/PrismCore.py", line 63, in <module>
from PySide2.QtCore import *
ModuleNotFoundError: No module named 'PySide2'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "Scripts/PrismCore.py", line 68, in <module>
from PySide.QtCore import *
ImportError: dynamic module does not define module export function (PyInit_QtCore)

I have PySide2 installed and working on my system, so I'm unsure why I'm seeing this error message.

#2 · 24. März 2020, 15:29

It looks like you are running the Prism installer with Python 3. The Prism version you are using requires Python 2.7.

Try modify the shell script to use Python 2.7 instead.

#3 · 21. Januar 2021, 21:03

Having same issue on ubuntu 20. PySide for python2.7 is now longer supported on ubuntu 20. Any chance of supporting python3 by default to make it work on Ubuntu 20.10 ?

Or release an AppImage version.

#4 · 22. Januar 2021, 11:27

Hey @platerytter,

someone else solved this issue on Ubuntu 20: https://prism-pipeline.com/forum/topic/prism-1-3-installation-problem/?part=2#postid-2252

There's no specific date yet, but sooner or later Prism will support Python 3 on Linux out of the box.

#5 · 25. Januar 2021, 19:27

I got it working by changing some of the install scripts to look for python3. Good to hear you're looking into Python3 support in the future.