I'm not sure how this happens, but Python does seem prone to package versioning problems. I managed to replicate the problem and fix it with the following command (actually split into multiple parts, but I think this should work too):
pip3 install --force-reinstall --user -U pyqt5 sip PyQtWebEngine Oisín On Sun, 15 Sep 2019 at 18:26, MrJay <[email protected]> wrote: > > > On Sunday, 15 September 2019 06:04:05 UTC-4, Oisín Mac Fhearaí wrote: > > Greetings Oisin. > Thank you for taking an interest in this thread. > > I'm curious if your active Python is not the system installed one. >> >> Perhaps you could try these commands: >> >> which python3 >> > > Produced: > kevin@Frodo4-MSI:~$ which python3 > /usr/bin/python3 > > > >> pip3 install PyQtWebEngine >> > Produced: > ERROR: Could not install packages due to an EnvironmentError: [Errno 13] > Permission denied: '/usr/local/lib/python3.6/dist-packages/PyQt5' > Consider using the `--user` option or check the permissions. > > Therefore I tried... > >> >> If the install fails due to a permission error, try: >> >> pip3 install --user PyQtWebEngine >> > > Requirement already satisfied: PyQt5>=5.13 in > ./.local/lib/python3.6/site-packages (from PyQtWebEngine) (5.13.0) > Requirement already satisfied: PyQt5_sip<13,>=4.19.14 in > ./.local/lib/python3.6/site-packages (from PyQt5>=5.13->PyQtWebEngine) > (4.19.18) > Installing collected packages: PyQtWebEngine > *Successfully installed PyQtWebEngine-5.13.1* > > Then I ran mnemosyne from 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. > *RuntimeError: the sip module implements API v12.0 to v12.6 but the > PyQt5.QtWebEngineWidgets module requires API v12.7* > 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. > *RuntimeError: the sip module implements API v12.0 to v12.6 but the > PyQt5.QtWebEngineWidgets module requires API v12.7* > > Noticing the RuntimeError related to '*sip*' I tried: > > pip3 install PyQt5-sip > Requirement already satisfied: PyQt5-sip in > ./.local/lib/python3.6/site-packages (4.19.18) > > But nothing related to API v12.7 > I attempted to run Mnemosyne from the command line again and received the > same (last) error message. > > Again I'm stumped and I am at a loss as to how to proceed. > However I do thank you for your suggestions and assistance. It's > appreciated. > > Kevin > > =============== > > > > >> 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 =:* >>> >>> >>> >>> *ke...@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. > 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/8445a0c3-ba46-4f76-83c9-2a2e2f0c428e%40googlegroups.com > <https://groups.google.com/d/msgid/mnemosyne-proj-users/8445a0c3-ba46-4f76-83c9-2a2e2f0c428e%40googlegroups.com?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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