[Bug 1013276] Re: update-manager crashed with ImportError in __main__: No module named UpdateManager.UpdateManager

[Barry Warsaw]

Just to complete the circle,  this probably happens because the
UpdateManager module is now only installed in the Python 3 sys.path, so
when invoked with Python 2, the module isn't found.

Does it make sense to crash with a more useful message?  E.g. we could
put a sys.version test at the top of update-manager and complain loudly
if it wasn't invoked with Python 3.  OTOH, maybe this is good enough.

Yes, the bug is not in Update Manager, but in whatever is invoking u-m
with the Python 2 command line.

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https://bugs.launchpad.net/bugs/1013276

Title:
  update-manager crashed with ImportError in __main__: No module named
  UpdateManager.UpdateManager

Status in “update-manager” package in Ubuntu:
  Incomplete

Bug description:
  update-manager crashed with ImportError in __main__: No module named
  UpdateManager.UpdateManager

  ProblemType: Crash
  DistroRelease: Ubuntu 12.10
  Package: update-manager 1:0.163
  Uname: Linux 3.5.0-030500rc2-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.2.2-0ubuntu2
  Architecture: amd64
  CrashCounter: 1
  Date: Thu Jun 14 19:57:53 2012
  ExecutablePath: /usr/bin/update-manager
  GsettingsChanges:
   b'com.ubuntu.update-manager' b'first-run' b'false'
   b'com.ubuntu.update-manager' b'launch-time' b'1339692919'
   b'com.ubuntu.update-manager' b'show-details' b'true'
   b'com.ubuntu.update-manager' b'window-height' b'325'
   b'com.ubuntu.update-manager' b'window-width' b'640'
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120609.1)
  InterpreterPath: /usr/bin/python2.7
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python /usr/bin/update-manager
  ProcEnviron:
   PATH=(custom, no user)
   LANG=ro_RO.UTF-8
   SHELL=/bin/bash
  PythonArgs: ['/usr/bin/update-manager']
  SourcePackage: update-manager
  Title: update-manager crashed with ImportError in __main__: No module named UpdateManager.UpdateManager
  Traceback:
   Traceback (most recent call last):
     File "/usr/bin/update-manager", line 35, in <module>
       from UpdateManager.UpdateManager import UpdateManager
   ImportError: No module named UpdateManager.UpdateManager
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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