mnemosyne crashed with AttributeError in <module>()

Are there any workarounds?

Here's the command line output of the error (running Hardy):

steve@dickens:~$ mnemosyne
Traceback (most recent call last):
  File "/usr/bin/mnemosyne", line 11, in <module>
    from mnemosyne.pyqt_ui.main_dlg import *
  File "/usr/lib/python2.5/site-packages/mnemosyne/pyqt_ui/main_dlg.py", line 9, in <module>
    from main_frm import *
  File "/usr/lib/python2.5/site-packages/mnemosyne/pyqt_ui/main_frm.py", line 1, in <module>
    from qtextedit2 import *
  File "/usr/lib/python2.5/site-packages/mnemosyne/pyqt_ui/qtextedit2.py", line 11, in <module>
    from mnemosyne.core import *
  File "/usr/lib/python2.5/site-packages/mnemosyne/core/__init__.py", line 1, in <module>
    from mnemosyne_core import *
  File "/usr/lib/python2.5/site-packages/mnemosyne/core/mnemosyne_core.py", line 1425, in <module>
    class XML_Importer(saxutils.DefaultHandler):
AttributeError: 'module' object has no attribute 'DefaultHandler'

I just manually installed the python2.4 package (from the repositories) for the hell of it. I get the same error in the console, but now the "sorry mnemosyne closed unexpectedly" window doesn't show up.

Don't know if that helps any.

sudo easy_install pyxml fixes things for me. (although this bug needs to be fixed)

Please sponsor the attached debdiff.
This crash is caused by the drop of the python-xml dependency. Although the required modules are provided by the standard Python xml library, this library does not contain the class DefaultHandler which was provided by python-xml. The attached debdiff solves this problem. It also fixes a messagebox error I found during testing and corrects the section in the menu file.
The package builds in a hardy pbuilder and installs, runs and imports/exports xml in a clean schroot.

I'd like scottk input on this, but I would anyhow avoid any unnecessary change for the time being (menu and messagebox error, the menu problem should be reported to Debian, and the messagebox one should be reported upstream).

If it's crashing we should fix it. Don't wait on me as I'm still mostly
offline.

sure, debdiff looks sane, please go ahead.

I've verified it's broken in its current state (it won't even start) and that the debdiff fixes it. Uploaded.

This bug was fixed in the package mnemosyne - 1.0-0ubuntu3

---------------
mnemosyne (1.0-0ubuntu3) hardy; urgency=low

  * Add patch 03_python-xml-removal-fix to use ContentHandler instead
    of DefaultHandler as base class for the XML_Importer classes.
    The DefaultHandler class is not provided by the standard Python
    xml library. Fixes crash at start-up (LP: #206958).
  * Add patch 04_messagebox_errors-fix to fix a missing argument in a
    messagebox_errors call.
  * debian/menu: use Applications section instead of Apps.

 -- Albert Damen <email address hidden> Wed, 09 Apr 2008 12:07:32 +0200

Bug and patch forwarded to Debian.

I have the 1.0-0ubuntu3 version installed but I am getting the error. Here is the terminal output I got:

Traceback (most recent call last):
  File "/usr/bin/mnemosyne", line 11, in <module>
    from mnemosyne.pyqt_ui.main_dlg import *
  File "/usr/lib/python2.5/site-packages/mnemosyne/pyqt_ui/main_dlg.py", line 9, in <module>
    from main_frm import *
  File "/usr/lib/python2.5/site-packages/mnemosyne/pyqt_ui/main_frm.py", line 1, in <module>
    from qtextedit2 import *
  File "/usr/lib/python2.5/site-packages/mnemosyne/pyqt_ui/qtextedit2.py", line 11, in <module>
    from mnemosyne.core import *
  File "/usr/lib/python2.5/site-packages/mnemosyne/core/__init__.py", line 1, in <module>
    from mnemosyne_core import *
  File "/usr/lib/python2.5/site-packages/mnemosyne/core/mnemosyne_core.py", line 1425, in <module>
    class XML_Importer(saxutils.DefaultHandler):
AttributeError: 'module' object has no attribute 'DefaultHandler'

I am running on a new Hardy upgrade, and did not have the problem on Gutsy (where Mnemosyne was installed from its website).

>> where Mnemosyne was installed from its website.

That is exactly the problem. The installation from the mnemosyne website puts the files in a different directory then the Ubuntu package and these files cannot be replaced by the Ubuntu mnemosyne package. You will need to remove the mnemosyne files under /usr/lib/python2.5/site-packages/ yourself. See also bug 221438.

Thanks for the help. It works fine now.

Hi,

I'm the Mnemosyne developper and I just merged this patch into the Mnemosyne codebase, so it will be in the upcoming Mnemosyne 1.1 release.

For some reason, I was never alerted of the existence of this patch, otherwise I would have done it sooner :-)

In the future, you can also set bugs like this to affect the (newly created) Mnemosyne project page here on Launchpad.

Peter

Hi Peter, you can subscribe to all bug mail for the specific ubuntu mnemosyne package <https://bugs.edge.launchpad.net/ubuntu/+source/mnemosyne/+subscribe>. You can also link the Ubuntu source package with the upstream project <https://edge.launchpad.net/ubuntu/intrepid/+source/mnemosyne/+edit-packaging>.

Since this bug report is not the right medium to discuss this, please contact me by filing a question https://answers.launchpad.net/launchpad or ping me on #launchpad at freenode.