Python - No module named CommandNotFound

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Python - No module named CommandNotFound

Post by wingedearth » Tue Apr 05, 2016 1:53 pm

Help, I'm getting an "ImportError: No module named 'CommandNotFound'" when running a python test.
The error indicates that it results from Line 27 of usr/lib/command-not-found, which reads:

Code: Select all

from CommandNotFound.util import crash_guard
From what I've seen on Google, this has to do with an installation issue from having both Python 2 and Python 3 installed, but the solutions I found on linuxforums do not resolve the problem. Please help.

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Re: Python - No module named CommandNotFound

Post by wingedearth » Tue Apr 05, 2016 1:54 pm

Here's my usr/lib/command-not-found file:

Code: Select all

# (c) Zygmunt Krynicki 2005, 2006, 2007, 2008
# Licensed under GPL, see COPYING for the whole text

from __future__ import absolute_import, print_function

__version__ = "0.3"

    import sys
    if sys.path and sys.path[0] == '/usr/lib':
        # Avoid ImportError noise due to odd installation location.
    if sys.version < '3':
        # We might end up being executed with Python 2 due to an old
        # /etc/bash.bashrc.
        import os
        if "COMMAND_NOT_FOUND_FORCE_PYTHON2" not in os.environ:
            os.execvp("python3.5", [sys.argv[0]] + sys.argv)

    import gettext
    import locale
    from optparse import OptionParser

    from CommandNotFound.util import crash_guard
    from CommandNotFound import CommandNotFound
except KeyboardInterrupt:
    import sys

def enable_i18n():
    cnf = gettext.translation("command-not-found", fallback=True)
    kwargs = {}
    if sys.version < '3':
        kwargs["unicode"] = True
        locale.setlocale(locale.LC_ALL, '')
    except locale.Error:
        locale.setlocale(locale.LC_ALL, 'C')

def fix_sys_argv(encoding=None):
    Fix sys.argv to have only unicode strings, not binary strings.
    This is required by various places where such argument might be
    automatically coerced to unicode string for formatting
    if encoding is None:
        encoding = locale.getpreferredencoding()
    sys.argv = [arg.decode(encoding) for arg in sys.argv]

class LocaleOptionParser(OptionParser):
    OptionParser is broken as its implementation of _get_encoding() uses
    sys.getdefaultencoding() which is ascii, what it should be using is
    locale.getpreferredencoding() which returns value based on LC_CTYPE (most
    likely) and allows for UTF-8 encoding to be used.
    def _get_encoding(self, file):
        encoding = getattr(file, "encoding", None)
        if not encoding:
            encoding = locale.getpreferredencoding()
        return encoding

def main():
    if sys.version < '3':
    parser = LocaleOptionParser(
        usage=_("%prog [options] <command-name>"))
    parser.add_option('-d', '--data-dir', action='store',
                      help=_("use this path to locate data fields"))
    parser.add_option('--ignore-installed', '--ignore-installed',
                      action='store_true',  default=False,
                      help=_("ignore local binaries and display the available packages"))
                      action='store_true', default=False,
                      help=_("don't print '<command-name>: command not found'"))
    (options, args) = parser.parse_args()
    if len(args) == 1:
        cnf = CommandNotFound(options.data_dir)
        if not cnf.advise(args[0], options.ignore_installed) and not options.no_failure_msg:
            print(_("%s: command not found") % args[0], file=sys.stderr)

if __name__ == "__main__":
    crash_guard(main, BUG_REPORT_URL, __version__)

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Re: Python - No module named CommandNotFound

Post by wingedearth » Tue Apr 05, 2016 1:55 pm

And if it helps, here's my /etc/bash.bashrc file:

Code: Select all

# System-wide .bashrc file for interactive bash(1) shells.

# To enable the settings / commands in this file for login shells as well,
# this file has to be sourced in /etc/profile.

# If not running interactively, don't do anything
[ -z "$PS1" ] && return

# don't put duplicate lines or lines starting with space in the history.
# See bash(1) for more options

# append to the history file, don't overwrite it
shopt -s histappend

# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)

# check the window size after each command and, if necessary,
# update the values of LINES and COLUMNS.
shopt -s checkwinsize

# If set, the pattern "**" used in a pathname expansion context will
# match all files and zero or more directories and subdirectories.
#shopt -s globstar

# make less more friendly for non-text input files, see lesspipe(1)
[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"

# set variable identifying the chroot you work in (used in the prompt below)
if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; then
    debian_chroot=$(cat /etc/debian_chroot)


# Set colorful PS1 only on colorful terminals.
# dircolors --print-database uses its own built-in database
# instead of using /etc/DIR_COLORS.  Try to use the external file
# first to take advantage of user additions.  Use internal bash
# globbing instead of external grep binary.
safe_term=${TERM//[^[:alnum:]]/?}   # sanitize TERM
[[ -f ~/.dir_colors   ]] && match_lhs="${match_lhs}$(<~/.dir_colors)"
[[ -f /etc/DIR_COLORS ]] && match_lhs="${match_lhs}$(</etc/DIR_COLORS)"
[[ -z ${match_lhs}    ]] \
        && type -P dircolors >/dev/null \
        && match_lhs=$(dircolors --print-database)
[[ $'\n'${match_lhs} == *$'\n'"TERM "${safe_term}* ]] && use_color=true

if ${use_color} ; then
        # Enable colors for ls, etc.  Prefer ~/.dir_colors #64489
        if type -P dircolors >/dev/null ; then
                if [[ -f ~/.dir_colors ]] ; then
                        eval $(dircolors -b ~/.dir_colors)
                elif [[ -f /etc/DIR_COLORS ]] ; then
                        eval $(dircolors -b /etc/DIR_COLORS)
            eval $(dircolors)

        if [[ ${EUID} == 0 ]] ; then
                PS1='${debian_chroot:+($debian_chroot)}\[\033[01;31m\]\h\[\033[01;34m\] \W \$\[\033[00m\] '
                PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[01;34m\] \w \$\[\033[00m\] '

        alias ls='ls --color=auto'
        alias grep='grep --colour=auto'
        alias fgrep='fgrep --color=auto'
        alias egrep='egrep --color=auto'
        if [[ ${EUID} == 0 ]] ; then
                # show root@ when we don't have colors
                PS1='\u@\h \W \$ '
                PS1='\u@\h \w \$ '

# some more ls aliases
alias ll='ls -alF'
alias la='ls -A'
alias l='ls -CF'

# Add an "alert" alias for long running commands.  Use like so:
#   sleep 10; alert
alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'

# Alias definitions.
# You may want to put all your additions into a separate file like
# ~/.bash_aliases, instead of adding them here directly.
# See /usr/share/doc/bash-doc/examples in the bash-doc package.

if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases

# Try to keep environment pollution down, EPA loves us.
unset use_color safe_term match_lhs

# Commented out, don't overwrite xterm -T "title" -n "icontitle" by default.
# If this is an xterm set the title to user@host:dir
#case "$TERM" in
#    PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}: ${PWD}\007"'
#    ;;
#    ;;

# enable bash completion in interactive shells
if ! shopt -oq posix; then
  if [ -f /usr/share/bash-completion/bash_completion ]; then
    . /usr/share/bash-completion/bash_completion
  elif [ -f /etc/bash_completion ]; then
    . /etc/bash_completion

# if the command-not-found package is installed, use it
if [ -x /usr/lib/command-not-found -o -x /usr/share/command-not-found/command-not-found ]; then
    function command_not_found_handle {
            # check because c-n-f could've been removed in the meantime
                if [ -x /usr/lib/command-not-found ]; then
           /usr/lib/command-not-found -- "$1"
                   return $?
                elif [ -x /usr/share/command-not-found/command-not-found ]; then
           /usr/share/command-not-found/command-not-found -- "$1"
                   return $?
           printf "%s: command not found\n" "$1" >&2
           return 127

if [ -x /usr/bin/mint-fortune ]; then

export PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] \w\[\033[01;33m\]$(__git_ps1)\[\033[01;34m\] \$\[\033[00m\] '

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Re: Python - No module named CommandNotFound

Post by wingedearth » Tue Apr 05, 2016 8:03 pm

Has anyone had this sort of error with Python's CommandNotFound module running on Linux? Does anyone know how to resolve this?

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