ImportError: No module named CommandNotFound.util

[Jia Xiaolei]

hi:

my linxu is ubuntu 12.04 lts.

when i tyep a command like 'a', it show as follows:

pabb@drone-003:~$ a
Traceback (most recent call last):
  File "/usr/lib/command-not-found", line 21, in <module>
    from CommandNotFound.util import crash_guard
ImportError: No module named CommandNotFound.util

I open the "/usr/lib/command-not-found", found something like this:

from __future__ import absolute_import

__version__ = "0.2.44"
BUG_REPORT_URL = "https://bugs.launchpad.net/command-not-found/+filebug"

try:
    import sys
    if sys.path and sys.path[0] == '/usr/lib':
        # Avoid ImportError noise due to odd installation location.
        sys.path.pop(0)

    import gettext
    import locale
    from optparse import OptionParser

    from CommandNotFound.util import crash_guard
    from CommandNotFound import CommandNotFound

In my another computer, using version '0.2.21', it can work well.

__version__ = "0.2.21"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/+source/command-not-found"

try:
    import sys
    import CommandNotFound
    from CommandNotFound.util import crash_guard, gettext_wrapper as _
    from CommandNotFound import CommandNotFound
    from optparse import OptionParser
except KeyboardInterrupt:
    sys.exit(127)

Is it a bug in "0.2.44"? or something else?

--- jiaxiaolei

[Zygmunt Krynicki (zyga)]

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W dniu 26.04.2013 06:01, Jia Xiaolei pisze:

Hi.

It seems that your command-not-found installation is corrupted.

Were you updating your system at that time?
Did your computer crash earlier?

You can try to reinstall that package to fix this:

$ sudo apt-get install --reinstall command-not-found
python-commandnotfound python3-commandnotfound

The actual packages may depend on the version of Ubuntu you are using.
Those are accurate for Ubuntu 13.04 (Raring)

Thanks
ZK

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[Phocion (tschultz)]

I just had the same issue, but re-installing command-not-found didn't solve the issue. Have you been messing around with multiple Python interpreter versions by any chance?

I had to install Python 2.6 for a certain project to compile from the Deadsnakes PPA and pointed /usr/bin/python to it. That's when I first started having these issues.

Reverting /usr/bin/python back to the previous interpreter immediately fixed the issue.

[mehmet.nural (zxcq14)]

this bug affects me too after a python update.
the packeges have updated to that versions:
python=2.7.3-0ubuntu2.2
python-dev=2.7.3-0ubuntu2.2
python-minimal=2.7.3-0ubuntu2.2
python2.7=2.7.3-0ubuntu3.2
python2.7-dev=2.7.3-0ubuntu3.2
python2.7-minimal=2.7.3-0ubuntu3.2
libpython2.7=2.7.3-0ubuntu3.2

[Seth Hill (sethrh)]

I started getting this after installing python3.4 in mint 15.

I installed python3.4 into /usr/local/bin, which comes before /usr/bin in my PATH.

My /etc/bash.bashrc runs command-not-found like so (using python 2.7):

    /usr/bin/python /usr/lib/command-not-found

The command-not-found script notices that it's running under python2, and then uses execvp("python3") to flip over to python 3.
However, in my case "python3" resolves to /usr/local/bin/python3.4 (because /usr/local/bin is first in my path)

Python3.4 doesn't have the CommandNotFound module, so it generates an ImportError.

I solved the problem by changing the execvp("python3") to execvp("/usr/bin/python3.3").

In summary, the script assumes that "python3" is the default system's python3.