opensesame not working in ubuntu 16.10 (yakkety)

Comments

• sebastiaan

  October 2016

  Hi Kevin,

  What happens is the following: OpenSesame installs all the correct PyQt4 dependencies, but picks PyQt5 if it is available. On your system it is, only it doesn't have QScintilla installed--you only have the PyQt4 version of QScintilla. So you need to install also python-pyqt5.qsci, and perhaps also other pyqt5 components if OpenSesame still doesn't work (check the error messages for which ones).

  Cheers!
  Sebastiaan

  
  
  Check out SigmundAI.eu for our OpenSesame AI assistant!
  
• kbmcgowan

  October 2016

  thank you! I'm sorry I pestered you instead of figuring out that I just needed this package.
• earcanal

  December 2016

  I have the same issue. Have done

  sudo apt-get install python3-pip
  pip3 install QScintilla
  

  but still get

  $ opensesame
  Traceback (most recent call last):
    File "/usr/bin/opensesame", line 25, in <module>
      __main__.opensesame()
    File "/usr/lib/python2.7/dist-packages/libqtopensesame/__main__.py", line 83, in opensesame
      opensesame.resume_init()
    File "/usr/lib/python2.7/dist-packages/libqtopensesame/qtopensesame.py", line 105, in resume_init
      from QProgEdit import validate
    File "/usr/lib/python2.7/dist-packages/QProgEdit/__init__.py", line 69, in <module>
      from QProgEdit._quiloader import QUiLoader
    File "/usr/lib/python2.7/dist-packages/QProgEdit/_quiloader.py", line 23, in <module>
      from QProgEdit.pyqt5compat import uic
    File "/usr/lib/python2.7/dist-packages/QProgEdit/pyqt5compat.py", line 22, in <module>
      from PyQt5 import Qsci
  ImportError: cannot import name Qsci
  

  Any ideas?

  $ opensesame --version
     3.1.4b1 'Jazzy James'
  
• sebastiaan

  December 2016

  @earcanal Python 2 and 3 are completely separate environments. pip3 installs packages for Python 3, pip for Python 2. So you've installed QScintilla for Python 3, whereas OpenSesame uses Python 2, as you can tell from the stacktrace.

  Pro-tip: In Ubuntu, most Python packages are available through the repositories (like QScintilla) or external PPAs (like OpenSesame). Whenever possible, I would use those instead of pip.

  
  
  Check out SigmundAI.eu for our OpenSesame AI assistant!
  
• earcanal

  December 2016

  Can you tell from the above errors which packages I need to install? I seem to already have what I thought was QScintilla for Python 2:

  $ sudo apt-get install python-qscintilla2
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  python-qscintilla2 is already the newest version (2.9.1+dfsg-4build1).
  0 to upgrade, 0 to newly install, 0 to remove and 6 not to upgrade.
  
• sebastiaan

  December 2016

  Can you tell from the above errors which packages I need to install? I seem to already have what I thought was QScintilla for Python 2:

  

  See my first reply!

  
  
  Check out SigmundAI.eu for our OpenSesame AI assistant!
  
• earcanal

  December 2016

  Sorry, python-pyqt5.qsci didn't look like a package name, so I thought resolving this was harder than it looked! To be clear, the only thing I needed to do was

  sudo apt-get install python-pyqt5.qsci
  

  Thanks for bearing with me ;-)
• hah

  July 2020 edited July 2020

  Hi I'm stuck in the same issue on Ubuntu 18 LTS

  I'm unable to install python-pyqt5.qsci

  The error is

  `E: Unable to locate package python-pyqt5.qsci`

  
  

  The debug windows shows the error:

  `ImportError: cannot import name 'Qsci' from 'PyQt5'`

  and OpenSesame doesn't start

  
  

  I have installed QScintilla using pip3.
• sebastiaan

  August 2020

  @hah The message E: Unable to locate package python-pyqt5.qsci simply means that this package doesn't exist in the repositories. I don't have Ubuntu 18 myself, so it will be tricky to debug this. (Package dependencies can be tricky to resolve, especially if the system isn't clean.) But I would start by removing all OpenSesame-related packages and then install python3-opensesame from the CogSci PPA, as described here:

  • https://osdoc.cogsci.nl/3.3/download/#ubuntu

  If this doesn't work, you can of course also install OpenSesame through Anaconda (also described on the download page).

  Cheers!

  Sebastiaan

  
  
  Check out SigmundAI.eu for our OpenSesame AI assistant!