Subject: Shot the installation – Please help!

[Carsten Alexander]

Hi folks,

after I made an unsuccessful attempt to update Mnemosyne from 2.4 (according to Mnemosyne » Help » About) to version 2.7.3 (according to ~$ mnemosyne --version), Mnemosyne no longer starts and breaks with the error message

Log body:

  An unexpected error has occurred.
Please forward the following info to the developers:

Traceback (innermost last):
  File "/usr/bin/mnemosyne", line 224, in <module>
    "ConfigurationWdgtCramming")]

 AttributeError: 'Mnemosyne' object has no attribute 'extra_components_for_plugin'

from. What can I do? I can still remember the process reasonably well. So if you need additional information, please ask me . My system:

Os:        Ubuntu 18.04.5 LTS
Memory:    7.8 GiB
Processor: Intel® Core™ i5-3570K CPU @ 3.40GHz × 4
Grafix:    NV117
GNOME:     3.28.2
Type:      64-bit

--
Best regards,
Carsten Alexander

[Peter Bienstman]

Hi,

My guess is that you have a mixture of old and new Mnemosyne files somewhere. Try uninstalling both the system version and your latest version, and try again.

Peter 

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[Carsten Alexander]

Thanks Peter,

after removing Mnemosyne, I tried an installation – strictly according to the documentation. But she faltered while installing PyQt5.

My protocol:

1. ~$ sudo apt-get autoremove mnemosyne
2. ~$ sudo apt-get install mnemosyne
   · Traceback (innermost last):

        File "/usr/bin/mnemosyne", line 224, in <module>
           "ConfigurationWdgtCramming")]
        AttributeError: 'Mnemosyne' object has no attribute 'extra_components_for_plugin'

3. ~$ sudo apt-get autoremove mnemosyne
4. ~$ sudo pip install --upgrade PyQt5 matplotlib cheroot webob pillow googletrans gTTS
   · Could not find a version that satisfies the requirement PyQt5 (from versions: none)
   · No matching distribution found for PyQt5
5. ~$ sudo pip install --upgrade pip
6. ~$ sudo pip install --upgrade PyQt5 matplotlib cheroot webob pillow googletrans gTTS
   · Could not find a version that satisfies the requirement PyQt5 (from versions: none)
   · No matching distribution found for PyQt5
7. ~$ sudo apt-get install python3-cherrypy3 python3-matplotlib python3-pip python3-setuptools python3-webob
8. ~$ sudo pip3 install PyQt5
   · Traceback (most recent call last):
        File "<string>", line 1, in <module>
        File "/usr/lib/python3.6/tokenize.py", line 452, in open
           buffer = _builtin_open(filename, 'rb')
     FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-build-d9q9nt3o/PyQt5/setup.py'
     (I checked it. There is no such directory like „pip-build-d9q9nt3o” in /tmp.)

Any ideas?

--

Best Regards,

Carsten Alexander

[Peter Bienstman]

Hi,

If you have troubles installing Pyqt5, that's not really a Mnemosyne issue. Perhaps on your distro you need to install Pyqt using the system package manager as opposed to pip? Otherwise you could also ask on a forum devoted to your distribution?

Peter 

To view this discussion on the web visit https://groups.google.com/d/msgid/mnemosyne-proj-users/a22b9d5f-4cf8-4f2b-b902-3d8d5b130ad3n%40googlegroups.com.

[Carsten Alexander]

Peter,

> If you have troubles installing Pyqt5, that's not really a Mnemosyne issue.

I know that, of course. But I have a general problem with the installation of the software or its dependencies and I need help with this.

I took a few steps forward:

 9. ~$ sudo apt-get install qt5-default qt5-qmake qtbase5-dev-tools qt5-doc

10. ~$ sudo python3 setup.py install
11. ~$ mnemosyne
    · Warning: Could not import OpenGL. Might cause a black screen on some Linux distributions. Try installing python3-opengl in that case.
12. ~$ sudo apt-get install python3-opengl
13. ~$ mnemosyne
    · Traceback (innermost last):
         File "/usr/local/bin/mnemosyne", line 4, in <module>
            __import__('pkg_resources').run_script('Mnemosyne==2.7.3', '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-2.7.3-py3.6.egg/EGG-INFO/scripts/mnemosyne", line 150, in <module>
            from PyQt5 import QtWebEngineWidgets  # Needs to happen first for some reason.
            ModuleNotFoundError: No module named 'PyQt5'

I suspect the problem is still with PyQt5 and will contact the appropriate forum. In any case, thank you for your support so far.

--

Best Regards,

Carsten Alexander

[Oisín Mac Fhearaí]

Which version of pip are you using? I see you've been trying 3 different approaches: default (presumably Python 2.7?) pip, pip3 and the APT repository versions.

You could try updating the Python 3.x version of pip using pip itself, rather than the apt-installed version. This seems to work for me (on Ubuntu 20.04):

❯ pip3 --version
pip 20.0.2 from /usr/lib/python3/dist-packages/pip (python 3.8)

❯ pip3 install -U pip
Collecting pip
  Using cached pip-20.3.3-py2.py3-none-any.whl (1.5 MB)
Installing collected packages: pip
Successfully installed pip-20.3.3

❯ pip --version
pip 20.3.3 from /home/omf/.local/lib/python3.8/site-packages/pip (python 3.8)

❯ pip3 --version
pip 20.3.3 from /home/omf/.local/lib/python3.8/site-packages/pip (python 3.8)

❯ pip3 install -U PyQT5
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: PyQT5 in /usr/lib/python3/dist-packages (5.14.1)
Collecting PyQT5
  Using cached PyQt5-5.15.2-5.15.2-cp35.cp36.cp37.cp38.cp39-abi3-manylinux2014_x86_64.whl (68.3 MB)
Requirement already satisfied: PyQt5-sip<13,>=12.8 in /home/omf/.local/lib/python3.8/site-packages (from PyQT5) (12.8.1)
Installing collected packages: PyQT5
Successfully installed PyQT5-5.15.2

However, Mnemosyne wouldn't launch with this version of PyQT5 since this Ubuntu APT repo only has QT 5.12.

I got past that with this:

❯ pip3 install -U PyQT5==5.14

Then it still wouldn't launch because:

>> ImportError: cannot import name 'QtWebEngineWidgets' from 'PyQt5' (/home/omf/.local/lib/python3.8/site-packages/PyQt5/__init__.py)

It seemed I already had the required package installed via apt, and it was needed for two other programs. I temporarily uninstalled them with:

❯ sudo apt remove python3-pyqt5.qtwebengine

❯ pip3 install PyQTWebEngine==5.14

Then I reinstalled the programs that depended on python3-pyqt5.qtwebengine, and Mnemosyne works again.

Python packages can be a bit of a pain. That's why I prefer to deal with them in "userspace" rather than system-wide "site-packages". But even still, every few months I'll run into problems and have to reinstall things. Well, it makes things exciting at least.

Oisín

To view this discussion on the web visit https://groups.google.com/d/msgid/mnemosyne-proj-users/c48d7e57-fbe4-4e2b-9414-3187fa399178n%40googlegroups.com.

[Carsten Alexander]

Dear Oisín,

Thank you for your detailed instructions. For a beginner like me, this is a valuable guide to meander along. Nevertheless, Mnemosyne breaks still off again. But this time with a different error message. Could it be because I have an outdated version of Python (3.6)?

That I did:

 1. ~$ pip3 --version
    · pip 9.0.1 from /usr/lib/python3/dist-packages (python 3.6)
 2. ~$ pip3 install -U pip
      Collecting pip
      Cache entry deserialization failed, entry ignored
      Cache entry deserialization failed, entry ignored
      Downloading https://files.pythonhosted.org/packages/54/eb/4a3642e971f404d69d4f6fa3885559d67562801b99d7592487f1ecc4e017/pip-20.3.3-py2.py3-none-any.whl (1.5MB)

      Installing collected packages: pip
      Successfully installed pip-20.3.3

 3. ~$ pip --version
    · pip 20.3.3 from /home/acamat/.local/lib/python3.6/site-packages/pip (python 3.6)
 4. ~$ pip3 --version
      WARNING: pip is being invoked by an old script wrapper. This will fail in a future version of pip.
      Please see https://github.com/pypa/pip/issues/5599 for advice on fixing the underlying issue.
      To avoid this problem you can invoke Python with '-m pip' instead of running pip directly.
      pip 20.3.3 from /home/acamat/.local/lib/python3.6/site-packages/pip (python 3.6)
 5: ~$ pip3 install -U PyQT5
      WARNING: pip is being invoked by an old script wrapper. This will fail in a future version of pip.
      Please see https://github.com/pypa/pip/issues/5599 for advice on fixing the underlying issue.
      To avoid this problem you can invoke Python with '-m pip' instead of running pip directly.

      Defaulting to user installation because normal site-packages is not writeable

      Collecting PyQT5
         Downloading PyQt5-5.15.2-5.15.2-cp35.cp36.cp37.cp38.cp39-abi3-manylinux2014_x86_64.whl (68.3 MB)
      Collecting PyQt5-sip<13,>=12.8
         Downloading PyQt5_sip-12.8.1-cp36-cp36m-manylinux1_x86_64.whl (278 kB)
      Installing collected packages: PyQt5-sip, PyQT5
      Successfully installed PyQT5-5.15.2 PyQt5-sip-12.8.1
 6: ~$ pip3 install -U PyQT5==5.14
      WARNING: pip is being invoked by an old script wrapper. This will fail in a future version of pip.
      Please see https://github.com/pypa/pip/issues/5599 for advice on fixing the underlying issue.
      To avoid this problem you can invoke Python with '-m pip' instead of running pip directly.

      Defaulting to user installation because normal site-packages is not writeable

      Collecting PyQT5==5.14
         Downloading PyQt5-5.14.0-5.14.0-cp35.cp36.cp37.cp38-abi3-manylinux1_x86_64.whl (63.5 MB)
      Requirement already satisfied: PyQt5-sip<13,>=12.7 in ./.local/lib/python3.6/site-packages (from PyQT5==5.14) (12.8.1)
      Installing collected packages: PyQT5
         Attempting uninstall: PyQT5
            Found existing installation: PyQt5 5.15.2
            Uninstalling PyQt5-5.15.2:
               Successfully uninstalled PyQt5-5.15.2
      Successfully installed PyQT5-5.14.0
 7: ~$ mnemosyne

      Traceback (innermost last):
         File "/usr/local/bin/mnemosyne", line 4, in <module>
            __import__('pkg_resources').run_script('Mnemosyne==2.7.3', '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-2.7.3-py3.6.egg/EGG-INFO/scripts/mnemosyne", line 150, in <module>
            from PyQt5 import QtWebEngineWidgets  # Needs to happen first for some reason.

      ImportError: cannot import name 'QtWebEngineWidgets'

 8: ~$ sudo apt remove python3-pyqt5.qtwebengine
       Paket »python3-pyqt5.qtwebengine« ist nicht installiert, wird also auch nicht entfernt.
 9: ~$ pip3 install PyQTWebEngine==5.14
      WARNING: pip is being invoked by an old script wrapper. This will fail in a future version of pip.
      Please see https://github.com/pypa/pip/issues/5599 for advice on fixing the underlying issue.
      To avoid this problem you can invoke Python with '-m pip' instead of running pip directly.

      Defaulting to user installation because normal site-packages is not writeable

      Collecting PyQTWebEngine==5.14
         Downloading PyQtWebEngine-5.14.0-5.14.2-cp35.cp36.cp37.cp38-abi3-manylinux2014_x86_64.whl (65.7 MB)
      Requirement already satisfied: PyQt5>=5.14 in ./.local/lib/python3.6/site-packages (from PyQTWebEngine==5.14) (5.14.0)
      Requirement already satisfied: PyQt5-sip<13,>=12.7 in ./.local/lib/python3.6/site-packages (from PyQTWebEngine==5.14) (12.8.1)
      Installing collected packages: PyQTWebEngine
      Successfully installed PyQTWebEngine-5.14.0
10: ~$ sudo python3 setup.py install
11: ~$ mnemosyne

      Traceback (innermost last):
         File "/usr/local/bin/mnemosyne", line 4, in <module>
            __import__('pkg_resources').run_script('Mnemosyne==2.7.3', '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-2.7.3-py3.6.egg/EGG-INFO/scripts/mnemosyne", line 279, in <module>
            debug_file=options.debug_file)
         File "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.7.3-py3.6.egg/mnemosyne/libmnemosyne/__init__.py", line 400, in initialise
            self.register_components()
         File "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.7.3-py3.6.egg/mnemosyne/libmnemosyne/__init__.py", line 465, in register_components
            importlib.import_module(module_name), class_name)
         File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
            return _bootstrap._gcd_import(name[level:], package, level)
         File "<frozen importlib._bootstrap>", line 994, in _gcd_import
         File "<frozen importlib._bootstrap>", line 971, in _find_and_load
         File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
         File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
         File "<frozen importlib._bootstrap_external>", line 678, in exec_module
         File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
         File "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.7.3-py3.6.egg/mnemosyne/libmnemosyne/translators/google_translator.py", line 5, in <module>
            from googletrans import Translator as gTranslator
      ModuleNotFoundError: No module named 'googletrans'

--

Best Regards,

Carsten Alexander

[Peter Bienstman]

You're missing googletrans, just install it with pip.

Cheers, 

Peter 

To view this discussion on the web visit https://groups.google.com/d/msgid/mnemosyne-proj-users/9dcfe5e7-f155-402e-830b-d4b0627bfefbn%40googlegroups.com.

[Carsten Alexander]

Yay! Mnemosyne is running again :). I just had to install:

~$ pip install googletrans
~$ pip install gtts

Thank you very much for your help and support. Without this I just would be lost.

Best Regards,

Carsten Alexander