Does not handle KeyboardInterrupt

[Vadim Peretokin]

I get:

File "/usr/lib/python2.7/site.py", line 562, in <module>
    main()
  File "/usr/lib/python2.7/site.py", line 545, in main
    known_paths = addsitepackages(known_paths)
  File "/usr/lib/python2.7/site.py", line 327, in addsitepackages
    addsitedir(sitedir, known_paths)
  File "/usr/lib/python2.7/site.py", line 195, in addsitedir
    addpackage(sitedir, name, known_paths)
  File "/usr/lib/python2.7/site.py", line 148, in addpackage
    f = open(fullname, "rU")
KeyboardInterrupt

Whenever I press ctrl+c to stop it from running, using 0.2.44.1ubuntu1. It shouldn't be erroring out when I wish to cancel it.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: command-not-found 0.2.44.1ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-15.25-generic 3.0.13
Uname: Linux 3.0.0-15-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
CheckboxSubmission: 65532cf2dcc18adf59d8dfa735190aed
CheckboxSystem: 3e53d3ea5811723345f19eff5070f9ab
Date: Mon Jan 23 15:13:17 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_CA:en
 PATH=(custom, user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: command-not-found
UpgradeStatus: Upgraded to oneiric on 2011-10-19 (95 days ago)

[Zygmunt Krynicki (zyga)]

This is a bug in python that cannot be fixed in command not found. The error you are seeing happens before the application starts up. This is actually python runtime startup being interrupted

[Vadim Rutkovsky (roignac)]

Can't we just handle it and show pretty 'Cancelled' output? See http://effbot.org/zone/stupid-exceptions-keyboardinterrupt.htm for example

[Zygmunt Krynicki (zyga)]

On 01/31/2012 09:29 AM, Vadim Rutkovsky wrote:
> Can't we just handle it and show pretty 'Cancelled' output? See
> http://effbot.org/zone/stupid-exceptions-keyboardinterrupt.htm for
> example
>

Please re-read my previous comment. Unless you patch python there is
nothing an application can do to prevent this. We _do_ handle
KeyboardInterrupt exceptions by the way, just that most people don't get
to see that one as it simply silently quits.

[Vadim Peretokin (vperetokin)]

Perhaps the python interpreter could be wrapped around?

It's just... really unpleasant and unaesthetic.

[Zygmunt Krynicki (zyga)]

Given the environment we are running in that is not feasible technically.
The correct solution is to either patch python or to write a C/vala client.

Last time I checked this (a few years ago) vala lacked bindings to gdbm, if that is changed we could track this in a blueprint.

[Vadim Peretokin (vperetokin)]

There are bindings: https://github.com/apmasell/vapis/blob/master/gdbm.vapi

Though I'm not for advocating a complete re-write just because of this...
unless someone has free time they'd like to spend on this.