python2.7 failed to import webbrowser: NameError in register_X_browsers(): global name 'Chrome' is not defined - Regression in 2.7.4~rc1-2ubuntu1

[Per-Inge]

Raring
python2.7: 2.7.4~rc1-2ubuntu1

The webbrowser module from python2.7-stdlib failed to import. It seems to be a regression in python2.7 2.7.4~rc1-2ubuntu1, and it is not reproducible with python2.7 2.7.4~rc1-0ubuntu1

TEST CASE:
1. From the command line run the command:
$ python2.7 -c "import webbrowser"

ACTUAL RESULT:
$ python2.7 -c 'import webbrowser'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python2.7/webbrowser.py", line 505, in <module>
    register_X_browsers()
  File "/usr/lib/python2.7/webbrowser.py", line 489, in register_X_browsers
    register(browser, None, Chrome(browser))
NameError: global name 'Chrome' is not defined

Original report:
It seems that the Ubuntu One client will not start

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: ubuntuone-client 4.1.92-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-14.24-generic 3.8.4
Uname: Linux 3.8.0-14-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.9.2-0ubuntu2
Architecture: amd64
Date: Mon Mar 25 07:00:34 2013
ExecutablePath: /usr/lib/ubuntuone-client/ubuntuone-syncdaemon
InstallationDate: Installed on 2012-10-28 (147 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
InterpreterPath: /usr/bin/python2.7
MarkForUpload: True
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/lib/ubuntuone-client/ubuntuone-syncdaemon
ProcEnviron:
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
 PATH=(custom, no user)
 LANG=en_US.UTF-8
PythonArgs: ['/usr/lib/ubuntuone-client/ubuntuone-syncdaemon']
SourcePackage: ubuntuone-client
Title: ubuntuone-syncdaemon crashed with NameError in register_X_browsers(): global name 'Chrome' is not defined
UbuntuOneSyncdaemonExceptionsLog:

UpgradeStatus: Upgraded to raring on 2013-02-18 (34 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
mtime.conffile..etc.xdg.autostart.ubuntuone.launch.desktop: 2012-11-03T09:16:45.667113

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Léa GRIS (lea-gris)]

Happened crash on session start short time after login.

I can point, I had google-chrome as default browser for some time, but switched back to Firefox as default browser.
But:
x-www-browser alternative was still pointed to /usr/bin/google-chrome
  Sélection Chemin Priorité État
------------------------------------------------------------
  0 /usr/bin/opera 200 mode automatique
  1 /usr/bin/epiphany-browser 85 mode manuel
  2 /usr/bin/firefox 40 mode manuel
* 3 /usr/bin/google-chrome 120 mode manuel
  4 /usr/bin/opera 200 mode manuel
  5 /usr/bin/xlinks2 69 mode manuel

Switching to firefox now and will see if it trigger this bug again.

[Jean-Baptiste Lallement (jibel)]

Assigning to python2.7 where webbrowser.py belongs to.

[xelatirdan (xelatirdan)]

When I start Ubuntu One and Play on Linux:

Traceback (most recent call last):
  File "mainwindow.py", line 21, in <module>
    import os, getopt, sys, urllib, signal, string, time, webbrowser, gettext, locale, sys, shutil, subprocess
  File "/usr/lib/python2.7/webbrowser.py", line 505, in <module>
    register_X_browsers()
  File "/usr/lib/python2.7/webbrowser.py", line 489, in register_X_browsers
    register(browser, None, Chrome(browser))
NameError: global name 'Chrome' is not defined
/usr/share/playonlinux/playonlinux: строка 144: python2.6: команда не найдена

I delete my Chromiun and then all nice, Ubuntu One and Play on Linux run!

[WalterCool (waltercool)]

I can confirm this bug, doesn't replicate on Python 3 (3.3.0-2ubuntu9), webbrowser works fine, just the issue affects Python 2 (2.7.4~rc1-2ubuntu1)

[Jean-Baptiste Lallement (jibel)]

This patch adds the missing Chrome class

[Žygimantas Beručka (zygis)]

Thanks, this patch fixes it.

[aleandro (aleandrodasilva)]

I found this bug starting Playonlinux. I believe there are many others applications involved.
Ho to apply the patch? Thanks.

[Jean-Baptiste Lallement (jibel)]

Don't apply the patch, just wait for the next upload of python2.7

[aleandro (aleandrodasilva)]

OK but I applied the patch already and it works well. Should I remove the lines I modified?

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "python2.7_2.7.4~rc1-2ubuntu1_LP1159636.diff" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]

[Amir Mahmoudi (a-mahmoudi-ir)]

I can confirmed by that patch my problem solved too

[Launchpad Janitor (janitor)]

This bug was fixed in the package python2.7 - 2.7.4~rc1-2ubuntu2

---------------
python2.7 (2.7.4~rc1-2ubuntu2) raring; urgency=low

  * Fix webbrowser update. LP: #1159636.
 -- Matthias Klose <email address hidden> Mon, 25 Mar 2013 14:33:50 +0100

[Dirk Bockmann (dirk-bockmann)]

I don't have much to contribute. This issue appeared after I brought my system up to date last night. I also ran Chrome which I don't normally do. If there is a package I can add please let me know. All the best Dirk

[Scott Kitterman (kitterman)]

You should have it in your regular updates.

[Per-Inge (per-inge-hallin)]

It's working now after today's updates

[yoad aharon (yoadaharon)]

what number should i enter when using this patch p[num]?