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執行 apt update 時發生錯誤：ModuleNotFoundError：沒有名為 'apt_pkg' 的模組

tag-icon • tag-icon 18.04 python python3
執行 apt update 時發生錯誤：ModuleNotFoundError：沒有名為 'apt_pkg' 的模組

當我跑apt update在Ubuntu 18.04.6 LTS，這是我公司用於託管 Netbox 的伺服器，我遇到以下問題：

$ 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'

當我運行時我遇到類似的問題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'

我的一位同事告訴我運行這些並重試，但我遇到了同樣的問題：

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

然後我去查看這台伺服器上安裝了多少個python版本，我數了一下，有4個：

$ 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

運行python3 --version它返回Python 3.10.9

有誰知道如何解決此問題而無需遷移託管應用程式？那將是一場惡夢:(

編輯：

我轉而/usr/lib/python3/dist-packages尋找apt_pkgvials -la | grep "apt_pkg.cpython"並找到了該文件apt_pkg.cpython-36m-x86_64-linux-gnu.so，我將文件重命名為，apt_pkg.so現在我可以運行apt update一條新的錯誤訊息：

$ 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)

答案1

由於該文件/usr/lib/update-notifier/package-data-downloader，其第一行包含以下內容：

#!/usr/bin/python3

從前面的資訊來看，你的 python 是Python 3.10.9，

而 apt_pkg 是apt_pkg.cpython-36m-x86_64-linux-gnu.so，這意味著它只匹配 python3.6，你可能應該這樣做：

sudo rm /usr/bin/python3

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

確保python3 --version是python3.6.x

運行更新命令進行測試，

sudo apt update

答案2

烏班圖22.04。

當我嘗試這樣做時，我不斷收到警告和錯誤提示apt update，詳細資訊如下

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

事實證明，/usr/bin/python3連結到了一個無效地址。當我檢查時ls -ls /usr/bin/python*，有一條紅線指示哪個不可用。

我發現有用的是用 重置此連結ln -s /usr/bin/pythonVERSIONAVAILABLE /usr/bin/python3。

解決了。

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