Ubuntu – apt-get broken: No module named debian.deb822

sys.path:

['/usr/lib/update-notifier', '/usr/local/lib/python26.zip', '/usr/local/lib/python2.6', '/usr/local/lib/python2.6/plat-linux3', '/usr/local/lib/python2.6/lib-tk', '/usr/local/lib/python2.6/lib-old', '/usr/local/lib/python2.6/lib-dynload', '/usr/local/lib/python2.6/site-packages']

terry@terrylaptop:/usr/lib$ sudo apt-get install python-debian
Reading package lists... Done
Building dependency tree       
Reading state information... Done
python-debian is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 239 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]? y
Setting up update-notifier-common (0.119ubuntu8.6) ...
Traceback (most recent call last):
  File "/usr/lib/update-notifier/package-data-downloader", line 26, in <module>
    import debian.deb822
ImportError: No module named debian.deb822
dpkg: error processing update-notifier-common (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of flashplugin-installer:
 flashplugin-installer depends on update-notifier-common (>= 0.119ubuntu2); however:
  Package update-notifier-common is not configured yet.
dpkg: error processing flashplugin-installer (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
   Errors were encountered while processing:
 update-notifier-common
 flashplugin-installer
E: Sub-process /usr/bin/dpkg returned an error code (1)

This problem occurs everytime when I try to use apt-get install to update my Ubuntu. I am on 12.04.01 LTS.

I also installed python-debian from this link:
http://pkgs.org/ubuntu-12.04/ubuntu-main-i386/python-debian_0.1.21ubuntu1_all.deb.html
But it doesn't work.

Can somebody help me? Thank you very much. I googled but seems this should be already fixed in old version.

terry@terrylaptop:/usr/lib$ sudo apt-get install dolphin
Reading package lists... Done
Building dependency tree       
Reading state information... Done
dolphin is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 239 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]? y
Setting up update-notifier-common (0.119ubuntu8.6) ...
['/usr/lib/update-notifier', '/usr/local/lib/python26.zip', '/usr/local/lib/python2.6', '/usr/local/lib/python2.6/plat-linux3', '/usr/local/lib/python2.6/lib-tk', '/usr/local/lib/python2.6/lib-old', '/usr/local/lib/python2.6/lib-dynload', '/usr/local/lib/python2.6/site-packages']
Traceback (most recent call last):
  File "/usr/lib/update-notifier/package-data-downloader", line 29, in <module>
    import debian.deb822
ImportError: No module named debian.deb822
dpkg: error processing update-notifier-common (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of flashplugin-installer:
 flashplugin-installer depends on update-notifier-common (>= 0.119ubuntu2); however:
  Package update-notifier-common is not configured yet.
dpkg: error processing flashplugin-installer (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error   from a previous failure.
                                                                                                          Errors were encountered while processing:
 update-notifier-common
 flashplugin-installer
E: Sub-process /usr/bin/dpkg returned an error code (1)
terry@terrylaptop:/usr/lib$ ls /usr/local/lib/python2.6/debian.deb822.py 
/usr/local/lib/python2.6/debian.deb822.py

terry@terrylaptop:/usr/lib$ cat /usr/local/lib/python2.6/debian.deb822.py
import warnings

warnings.warn("please use 'debian.deb822' instead", DeprecationWarning,
              stacklevel=2)

from debian.deb822 import *

You can see that debian.deb822 in /usr/local/lib/python2.6, but still cannot find it.

——latest update on 2/20—————-

terry@terrylaptop:/usr/local/bin$ ls -l /usr/bin/py*
-rwxr-xr-x 1 root root  3752 May  2  2012 /usr/bin/py3_compilefiles
-rwxr-xr-x 1 root root 97759 May  2  2012 /usr/bin/pycentral
-rwxr-xr-x 1 root root  4124 Apr 18  2012 /usr/bin/pyclean
-rwxr-xr-x 1 root root 11933 Apr 18  2012 /usr/bin/pycompile
-rwxr-xr-x 1 root root  3723 May  2  2012 /usr/bin/py_compilefiles
lrwxrwxrwx 1 root root     8 Apr 27  2012 /usr/bin/pydoc -> pydoc2.7
-rwxr-xr-x 1 root root    79 Aug  1  2012 /usr/bin/pydoc2.7
lrwxrwxrwx 1 root root    12 Apr 27  2012 /usr/bin/pygettext -> pygettext2.7
-rwxr-xr-x 1 root root 22103 Aug  1  2012 /usr/bin/pygettext2.7
-rwxr-xr-x 1 root root   217 Mar  9  2012 /usr/bin/pyhtmlizer
lrwxrwxrwx 1 root root    24 Feb 20 07:24 /usr/bin/python -> /usr/loca/bin/python2.7
lrwxrwxrwx 1 root root    24 Jun 14  2012 /usr/bin/python2 -> /usr/local/bin/python2.6
lrwxrwxrwx 1 root root    24 Jun 14  2012 /usr/bin/python2.6 -> /usr/local/bin/python2.6
lrwxrwxrwx 1 root root    29 Apr 27  2012 /usr/bin/pyversions -> ../share/python/pyversions.py

terry@terrylaptop:/usr/local/bin$ ls -l /usr/local/bin/py*
-rwxrwxr-x 1 root root      84 Feb 20 07:21 /usr/local/bin/pydoc
lrwxrwxrwx 1 root root      24 Feb 20 07:31 /usr/local/bin/python -> /usr/local/bin/python2.7
lrwxrwxrwx 1 root root       9 Feb 20 07:23 /usr/local/bin/python2 -> python2.7
-rwxr-xr-x 1 root root 4610075 Jun 14  2012 /usr/local/bin/python2.6
-rwxr-xr-x 1 root root    1424 Jun 14  2012 /usr/local/bin/python2.6-config
-rwxr-xr-x 1 root root 4917197 Feb 20 07:22 /usr/local/bin/python2.7
-rwxr-xr-x 1 root root    1624 Feb 20 07:23 /usr/local/bin/python2.7-config
lrwxrwxrwx 1 root root      16 Feb 20 07:23 /usr/local/bin/python2-config -> python2.7-config
lrwxrwxrwx 1 root root      14 Feb 20 07:23 /usr/local/bin/python-config -> python2-config

I still cannot install. The sys.path is:

['/usr/lib/update-notifier', '/usr/local/lib/python27.zip', '/usr/local/lib/python2.7', '/usr/local/lib/python2.7/plat-linux2', '/usr/local/lib/python2.7/lib-tk', '/usr/local/lib/python2.7/lib-old', '/usr/local/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/site-packages']

——2013/2/22 update —————

terry@terrylaptop:/data$ sudo apt-get install python2.7
Reading package lists... Done
Building dependency tree       
Reading state information... Done
python2.7 is already the newest version.
The following packages were automatically installed and are no longer required:
  libnepomukdatamanagement4 libkexiv2-10 libkdegames5a libboost-program-options1.46.1 libkdecorations4 libkwinglutils1 libnepomuksync4  libokularcore1abi1 libssl0.9.8 libattica0.3 liblastfm0 libkwineffects1abi3
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.
5 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.