[Bug 1676852] Re: package update-notifier-common 3.168.4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Steve Langasek]

> I've been getting this error since installing Python 3.6

Do you mean you've manually overwritten the system python3 installation
on your 16.04 install?

> Where do I get this mythical module


$ dpkg -S python3*deb822|grep '\.py'
python3-debian: /usr/lib/python3/dist-packages/deb822.py
python3-debian: /usr/lib/python3/dist-packages/debian/deb822.py
python3-debian: /usr/share/doc/python3-debian/examples/deb822/grep_native_packages.py
$

> and where should it be installed, so I can get my system back to
normal?

You need to fix your system so that 'python3' on the path runs the
system python3.5.

How did you install python 3.6?

** Changed in: update-notifier (Ubuntu)
       Status: New => Incomplete

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to update-notifier in Ubuntu.
https://bugs.launchpad.net/bugs/1676852

Title:
  package update-notifier-common 3.168.4 failed to install/upgrade:
  subprocess installed post-installation script returned error exit
  status 1

Status in update-notifier package in Ubuntu:
  Incomplete

Bug description:
  I've been getting this error since installing Python 3.6, and when
  flashinstaller tries to update. It keeps complaining of a missing
  module called 'debian.deb822'


  Where do I get this mythical module, and where should it be installed,
  so I can get my system back to normal?

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: update-notifier-common 3.168.4
  ProcVersionSignature: Ubuntu 4.4.0-70.91-generic 4.4.49
  Uname: Linux 4.4.0-70-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  Date: Tue Mar 28 07:45:00 2017
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  InstallationDate: Installed on 2015-08-11 (595 days ago)
  InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422)
  PackageArchitecture: all
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.1
   apt  1.2.20
  SourcePackage: update-notifier
  Title: package update-notifier-common 3.168.4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/update-notifier/+bug/1676852/+subscriptions