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Aparece un error al ejecutar apt update: ModuleNotFoundError: ningún módulo llamado 'apt_pkg'

tag-icon • tag-icon 18.04 python python3
Aparece un error al ejecutar apt update: ModuleNotFoundError: ningún módulo llamado 'apt_pkg'

Cuando corro apt updateen unUbuntu 18.04.6 LTS, que es un servidor que utiliza mi empresa para alojar Netbox, tengo el siguiente problema:

$ sudo apt update
Hit:1 http://azure.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http://azure.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:3 http://azure.archive.ubuntu.com/ubuntu bionic-backports InRelease
Hit:4 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu bionic InRelease
Hit:5 https://packages.microsoft.com/ubuntu/18.04/prod bionic InRelease
Hit:6 http://security.ubuntu.com/ubuntu bionic-security InRelease
Traceback (most recent call last):
  File "/usr/lib/cnf-update-db", line 8, in <module>
    from CommandNotFound.db.creator import DbCreator
  File "/usr/lib/python3/dist-packages/CommandNotFound/db/creator.py", line 11, in <module>
    import apt_pkg
ModuleNotFoundError: No module named 'apt_pkg'
Reading package lists... Done
E: Problem executing scripts APT::Update::Post-Invoke-Success 'if /usr/bin/test -w /var/lib/command-not-found/ -a -e /usr/lib/cnf-update-db; then /usr/lib/cnf-update-db > /dev/null; fi'

Recibo un problema similar cuando ejecuto neofetch:

$ neofetch
Traceback (most recent call last):
  File "/usr/lib/command-not-found", line 28, in <module>
    from CommandNotFound import CommandNotFound
  File "/usr/lib/python3/dist-packages/CommandNotFound/CommandNotFound.py", line 19, in <module>
    from CommandNotFound.db.db import SqliteDatabase
  File "/usr/lib/python3/dist-packages/CommandNotFound/db/db.py", line 5, in <module>
    import apt_pkg
ModuleNotFoundError: No module named 'apt_pkg'

Un colega mío me dijo que los ejecutara y volviera a intentarlo, pero tuve el mismo problema:

sudo apt-get remove command-not-found
sudo apt-get clean
sudo apt-get update
sudo apt-get install command-not-found

Luego fui a comprobar cuántas versiones de Python están instaladas en este servidor y cuento 4:

$ ls -ls /usr/bin/python*
   0 lrwxrwxrwx 1 root root       9 Apr 16  2018 /usr/bin/python -> python2.7
   0 lrwxrwxrwx 1 root root       9 Apr 16  2018 /usr/bin/python2 -> python2.7
3544 -rwxr-xr-x 1 root root 3628904 Nov 28 18:51 /usr/bin/python2.7
   0 lrwxrwxrwx 1 root root      25 Jan 10 08:10 /usr/bin/python3 -> /etc/alternatives/python3
   0 lrwxrwxrwx 1 root root      16 Oct 25  2018 /usr/bin/python3-config -> python3.6-config
   4 -rwxr-xr-x 1 root root    1018 Oct 28  2017 /usr/bin/python3-jsondiff
   4 -rwxr-xr-x 1 root root    3661 Oct 28  2017 /usr/bin/python3-jsonpatch
   4 -rwxr-xr-x 1 root root    1342 May  1  2016 /usr/bin/python3-jsonpointer
   4 -rwxr-xr-x 1 root root     398 Nov 15  2017 /usr/bin/python3-jsonschema
5356 -rwxr-xr-x 1 root root 5481816 Dec  7 01:11 /usr/bin/python3.10
4424 -rwxr-xr-x 2 root root 4526456 Nov 25 14:10 /usr/bin/python3.6
   0 lrwxrwxrwx 1 root root      33 Nov 25 14:10 /usr/bin/python3.6-config -> x86_64-linux-gnu-python3.6-config
4424 -rwxr-xr-x 2 root root 4526456 Nov 25 14:10 /usr/bin/python3.6m
   0 lrwxrwxrwx 1 root root      34 Nov 25 14:10 /usr/bin/python3.6m-config -> x86_64-linux-gnu-python3.6m-config
   0 lrwxrwxrwx 1 root root      10 Oct 25  2018 /usr/bin/python3m -> python3.6m
   0 lrwxrwxrwx 1 root root      17 Oct 25  2018 /usr/bin/python3m-config -> python3.6m-config

Al ejecutarlo python3 --versionregresaPython 3.10.9

¿Alguien tiene idea de cómo puedo resolver este problema sin tener que migrar la aplicación alojada? Eso sería una pesadilla :(

EDITAR:

Me moví a /usr/lib/python3/dist-packagesbuscar apt_pkgvía ls -la | grep "apt_pkg.cpython"y encontré el archivo apt_pkg.cpython-36m-x86_64-linux-gnu.so, cambié el nombre del archivo apt_pkg.soy ahora pude ejecutarlo apt updatecon un nuevo mensaje de error:

$ sudo apt update && sudo apt upgrade
[sudo] password for admin-federico-dostuni:
Hit:1 http://azure.archive.ubuntu.com/ubuntu bionic InRelease
Get:2 http://azure.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Get:3 http://azure.archive.ubuntu.com/ubuntu bionic-backports InRelease [83.3 kB]
Hit:4 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:5 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu bionic InRelease
Hit:6 https://packages.microsoft.com/ubuntu/18.04/prod bionic InRelease
Fetched 172 kB in 1s (176 kB/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y

Setting up update-notifier-common (3.192.1.15) ...
Traceback (most recent call last):
  File "/usr/lib/update-notifier/package-data-downloader", line 24, in <module>
    import debian.deb822
  File "/usr/lib/python3/dist-packages/debian/deb822.py", line 78, in <module>
    class TagSectionWrapper(collections.Mapping):
AttributeError: module 'collections' has no attribute 'Mapping'
dpkg: error processing package update-notifier-common (--configure):
 installed update-notifier-common package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 update-notifier-common
E: Sub-process /usr/bin/dpkg returned an error code (1)

Respuesta1

debido al archivo /usr/lib/update-notifier/package-data-downloader, su primera línea contiene esto:

#!/usr/bin/python3

De la información anterior, tu Python es Python 3.10.9,

y apt_pkg es apt_pkg.cpython-36m-x86_64-linux-gnu.so, lo que significa que solo coincide con python3.6, es posible que debas hacer:

sudo rm /usr/bin/python3

sudo ln -f /usr/bin/python3.6 /usr/bin/python3

asegúrese de que python3 --versionseapython3.6.x

ejecutar el comando de actualización para una prueba,

sudo apt update

Respuesta2

Ubuntu 22.04.

Seguí recibiendo advertencias y mensajes de error cuando intenté hacerlo apt update, el detalle es como

Fetched 16.8 kB in 1s (14.2 kB/s) sh: 1: /usr/lib/cnf-update-db: not found Reading package lists... Done W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://dl.google.com/linux/chrome/deb stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E88979FB9B30ACF2 W: Failed to fetch https://dl.google.com/linux/chrome/deb/dists/stable/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E88979FB9B30ACF2 W: Some index files failed to download. They have been ignored, or old ones used instead. E: Problem executing scripts APT::Update::Post-Invoke-Success 'if /usr/bin/test -w /var/lib/command-not-found/ -a -e /usr/lib/cnf-update-db; then /usr/lib/cnf-update-db > /dev/null; fi' E: Sub-process returned an error code

Resultó ser que /usr/bin/python3estaba vinculado a una dirección nula. Cuando verifiqué ls -ls /usr/bin/python*, hay una línea roja que indica que no está disponible.

Lo que encontré útil fue restablecer este enlace con ln -s /usr/bin/pythonVERSIONAVAILABLE /usr/bin/python3.

Resuelto.

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