I'm curious if your active Python is not the system installed one. Perhaps you could try these commands:
which python3 pip3 install PyQtWebEngine If the install fails due to a permission error, try: pip3 install --user PyQtWebEngine Oisín On Sun, 15 Sep 2019, 05:12 Peter Bienstman, <[email protected]> wrote: > Hi, > > I'm afraid I don't have expertise in this particular matter, as I'm not > the one building the Ubuntu packages. > > If you don't want to use a non-LTS version, I suggested you contact the > Ubuntu developer that maintains the Mnemosyne package. They should > certainly know what the best way is to deal with Mnemosyne's dependencies. > > Other crazy option, but not sure if it will work, is run the Windows > version under Wine. > > Cheers, > > Peter > > > ------------------------------ > *From:* MrJay <[email protected]> > *Sent:* Sunday, 15 September 2019 02:27 > *To:* mnemosyne-proj-users > *Subject:* Re: [mnemosyne-proj-users] Mnemosyne will not launch -- Import > error - QtWebEngineWidgets > > > > On Friday, 6 September 2019 06:44:23 UTC-4, Peter Bienstman wrote: >> >> Hi, >> >> >> >> Which version of Mnemosyne did Ubuntu install? If it’s 2.4, then it will >> be too old to help with the dependencies of the new Mnemosyne. >> > > There was no Mnemosyne available in the Ubuntu "Software Center" listings. > However version 2.4 installed from the command line. > > >> >> >> Newer versions of Ubuntu have a more up-to-date version of Mnemosyne, so >> perhaps it’s worthwhile updating your system? >> > > My Ubuntu version is 18.04.3 LTS which is the latest version. (Please note > I only use LTS versions(. The Mnemosyne version it installed is 2.4 > >> >> >> You can also try to install Ubuntu packages with the extra dependences >> manually, like webenginewidgets, but that could be quite time consuming. >> > > I attempted to install webenginewidgets via... > sudo apt-get install python3-pyqt5.qtwebengine > Reading state information... Done > RESPONSE: > python3-pyqt5.qtwebengine is already the newest version > (5.10.1+dfsg-1ubuntu2). > > AND > sudo apt install qtwebengine5-dev > RESPONSE: > qtwebengine5-dev is already the newest version (5.9.5+dfsg-0ubuntu2) > > Again mnemosyne will not run via the GUI / Desktop > Using the Command line: > > *kevin@Frodo4-MSI:~$ mnemosyne* > > *An unexpected error has occurred. Please forward the following info to > the developers:* > > Traceback (innermost last): > File "/usr/bin/mnemosyne", line 132, in <module> > from PyQt5 import QtWebEngineWidgets # Needs to happen first for some > reason. > ImportError: cannot import name 'QtWebEngineWidgets' > An unexpected error has occurred. > Please forward the following info to the developers: > > Traceback (innermost last): > File "/usr/bin/mnemosyne", line 132, in <module> > from PyQt5 import QtWebEngineWidgets # Needs to happen first for some > reason. > ImportError: cannot import name 'QtWebEngineWidgets' > kevin@Frodo4-MSI:~$ mnemosyne --version > Mnemosyne 2.4 > ======== > > FROM the QT Website: *" https://wiki.qt.io/QtWebEngine/How_to_Try > <https://wiki.qt.io/QtWebEngine/How_to_Try> "* > I tried: > > Installing dependencies on Ubuntu > > sudo apt-get install bison build-essential gperf flex ruby python > libasound2-dev libbz2-dev libcap-dev \libcups2-dev libdrm-dev > libegl1-mesa-dev libgcrypt11-dev libnss3-dev libpci-dev libpulse-dev > libudev-dev \libxtst-dev gyp ninja-build > > Again running mnemosyne from the command line.... > > > *kevin@Frodo4-MSI:~$ mnemosyneAn unexpected error has occurred.Please forward > the following info to the developers*: > > Traceback (innermost last): > File "/usr/bin/mnemosyne", line 132, in <module> > from PyQt5 import QtWebEngineWidgets # Needs to happen first for some > reason. > ImportError: cannot import name 'QtWebEngineWidgets' > An unexpected error has occurred. > Please forward the following info to the developers: > > Traceback (innermost last): > File "/usr/bin/mnemosyne", line 132, in <module> > from PyQt5 import QtWebEngineWidgets # Needs to happen first for some > reason. > ImportError: cannot import name 'QtWebEngineWidgets' > > > > I'm really struggling here and hope you could provide some detailed > instruction on how to properly install the Qtwebenginewidgets. manually > if necessary, to get Mnemosyne working properly. > I now into my 3rd week of the current semester and hope I don't fall too > far behind in using this awesome flash card tool. > > Again I thank you in advance for your expertise in this matter. > > Cheers > Kevin > > > > *From:* [email protected] < > [email protected]> *On Behalf Of *MrJay > *Sent:* 05 September 2019 22:44 > *To:* mnemosyne-proj-users <[email protected]> > *Subject:* Re: [mnemosyne-proj-users] Mnemosyne will not launch -- Import > error - QtWebEngineWidgets > > > > Greetings Peter, > > Pleased to meet you. > > > > Following your suggestion I was able to install Mnemosyne via the package > manager via: > > sudo apt install mnemosyne > > > > However that was not without encountering errors which were eliminated > when I remove the "...2.6.1 Python3 install" via: > > a) sudo python3 setup.py install *--record files.txt* > b) sudo rm -rf Mnemosyne-2.6.1-py3.6.eggudo xargs rm -rf < files.txt > c) sudo rm -rf Mnemosyne-2.6.1-py3.6.egg (From the > */usr/local/lib/python3.6/dist-packages/Mnemosyne-2.6-py3.6.egg*/ > folder) > > > > After which I got what appeared to be a clean install. > > > > HOWEVER: > > Upon running Mnemosyne from the GUI Mnemosyne failed to launch. > > Upon running Mnemosyne from terminal I got back: > > > > kevin@Frodo4-MSI:~$ mnemosyne > An unexpected error has occurred. > > *===========* > > > *Please forward the following info to the developers: * > Traceback (innermost last): > File "/usr/bin/mnemosyne", line 132, in <module> > from PyQt5 import QtWebEngineWidgets # Needs to happen first for some > reason. > ImportError: cannot import name 'QtWebEngineWidgets' > An unexpected error has occurred. > Please forward the following info to the developers: > > Traceback (innermost last): > File "/usr/bin/mnemosyne", line 132, in <module> > from PyQt5 import QtWebEngineWidgets # Needs to happen first for some > reason. > ImportError: cannot import name 'QtWebEngineWidgets' > > *===========* > > Again I call upon your invaluable expertise to help me resolve this > install successfully. > > Thanks and > > Cheers > > Kevin > > > > ********************** > > > > > > > > > > > On Tuesday, 3 September 2019 23:49:12 UTC-4, Peter Bienstman wrote: > > Hi, > > I would suggest you first try to install Mnemosyne from Ubuntu's package > manager. Even if it's not the latest version, it will pull in all the > dependencies, so that you'll have an easier time manually installing the > latest version. > > Cheers, > > Peter > > > > > ------------------------------ > > *From:* MrJay <[email protected]> > *Sent:* Tuesday, 3 September 2019 21:15 > *To:* mnemosyne-proj-users > *Subject:* [mnemosyne-proj-users] Mnemosyne will not launch -- Import > error - QtWebEngineWidgets > > > > Greetings, > > > > After doing battle for many days installing the various components I > finally got Mnemosyne to compile, only to have it NOT LAUNCH with the > following errors (below). > > > > *My system*" Ubuntu 18.03.3 LTS, (uname = Linux Frodo4-MSI > 5.0.0-25-generic #26~18.04.1-Ubuntu SMP Thu Aug 1 13:51:02 UTC 2019 x86_64 > x86_64 x86_64 GNU/Linux) > > > > *Attempting to install:* Mnamosyne 2.6.1 > > > > *Error output =:* > > > > *kevin@Frodo4-MSI:~/Downloads/Extracted3/Mnemosyne-2.6.1$ > <kevin@Frodo4-MSI:~/Downloads/Extracted3/Mnemosyne-2.6.1$>* mnemosyne > Log body: > An unexpected error has occurred. > Please forward the following info to the developers: > > Traceback (innermost last): > File "/usr/local/bin/mnemosyne", line 4, in <module> > __import__('pkg_resources').run_script('Mnemosyne==2.6.1', 'mnemosyne') > File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line > 658, in run_script > self.require(requires)[0].run_script(script_name, ns) > File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line > 1438, in run_script > exec(code, namespace, namespace) > File > "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.6.1-py3.6.egg/EGG-INFO/scripts/mnemosyne", > line 145, in <module> > from PyQt5 import QtWebEngineWidgets # Needs to happen first for some > reason. > ImportError: cannot import name 'QtWebEngineWidgets' > > An unexpected error has occurred. > Please forward the following info to the developers: > > Traceback (innermost last): > File "/usr/local/bin/mnemosyne", line 4, in <module> > __import__('pkg_resources').run_script('Mnemosyne==2.6.1', 'mnemosyne') > File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line > 658, in run_script > self.require(requires)[0].run_script(script_name, ns) > File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line > 1438, in run_script > exec(code, namespace, namespace) > File > "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.6.1-py3.6.egg/EGG-INFO/scripts/mnemosyne", > line 145, in <module> > from PyQt5 import QtWebEngineWidgets # Needs to happen first for some > reason. > ImportError: cannot import name 'QtWebEngineWidgets' > An unexpected error has occurred. > Please forward the following info to the developers: > > Traceback (innermost last): > File "/usr/local/bin/mnemosyne", line 4, in <module> > __import__('pkg_resources').run_script('Mnemosyne==2.6.1', 'mnemosyne') > File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line > 658, in run_script > self.require(requires)[0].run_script(script_name, ns) > File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line > 1438, in run_script > exec(code, namespace, namespace) > File > "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.6.1-py3.6.egg/EGG-INFO/scripts/mnemosyne", > line 145, in <module> > from PyQt5 import QtWebEngineWidgets # Needs to happen first for some > reason. > ImportError: cannot import name 'QtWebEngineWidgets' > > > > Any assistance you can offer to get this package working would be greatly > appreciated. > > FYI I use Mnemosyne extensive in my college pursuits, which start again, > tomorrow. > > Thanks for you help > > Kevin > > ================= > > > > -- > You received this message because you are subscribed to the Google Groups > "mnemosyne-proj-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/mnemosyne-proj-users/b111adaa-42c5-432d-921f-0646384a7065%40googlegroups.com > <https://groups.google.com/d/msgid/mnemosyne-proj-users/b111adaa-42c5-432d-921f-0646384a7065%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "mnemosyne-proj-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/mnemosyne-proj-users/546d8123-e477-49c6-9cf8-cf37110ab1c7%40googlegroups.com > <https://groups.google.com/d/msgid/mnemosyne-proj-users/546d8123-e477-49c6-9cf8-cf37110ab1c7%40googlegroups.com?utm_medium=email&utm_source=footer> > . > >> -- > You received this message because you are subscribed to the Google Groups > "mnemosyne-proj-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/mnemosyne-proj-users/b9948b5d-0f5c-4d2c-9a95-c531ab319e90%40googlegroups.com > <https://groups.google.com/d/msgid/mnemosyne-proj-users/b9948b5d-0f5c-4d2c-9a95-c531ab319e90%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "mnemosyne-proj-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/mnemosyne-proj-users/e81dcba4-0368-4782-a62b-5b06698ec141%40owa.ugent.be > <https://groups.google.com/d/msgid/mnemosyne-proj-users/e81dcba4-0368-4782-a62b-5b06698ec141%40owa.ugent.be?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "mnemosyne-proj-users" group. 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