我运行了以下命令：
~$ sudo add-apt-repository "deb http://repo.mysql.com/apt/ubuntu/ xenial mysql-8.0"
sudo: unable to resolve host root
Traceback (most recent call last):
File "/usr/bin/add-apt-repository", line 12, in <module>
from softwareproperties.SoftwareProperties import SoftwareProperties, shortcut_handler
File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 27, in <module>
import apt_pkg
ModuleNotFoundError: No module named 'apt_pkg'
为了解决这个问题，我冒了无数次险，正如 askubuntu.com 所说
sudo apt-get install python-apt
sudo: unable to resolve host root
Reading package lists... Done
Building dependency tree
Reading state information... Done
python-apt is already the newest version (1.1.0~beta1ubuntu0.16.04.9).
The following packages were automatically installed and are no longer required:
gksu libgksu2-0 pencil2d snapd-login-service
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 393 not upgraded.
~$ sudo apt-get install python3-apt --reinstall
sudo: unable to resolve host root
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
gksu libgksu2-0 pencil2d snapd-login-service
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 393 not upgraded.
Need to get 0 B/147 kB of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 208998 files and directories currently installed.)
Preparing to unpack .../python3-apt_1.1.0~beta1ubuntu0.16.04.9_i386.deb ...
Unpacking python3-apt (1.1.0~beta1ubuntu0.16.04.9) over (1.1.0~beta1ubuntu0.16.04.9) ...
Setting up python3-apt (1.1.0~beta1ubuntu0.16.04.9) ...
$ sudo ln -s apt_pkg.cpython-{35m,34m}-x86_64-linux-gnu.so
ln: failed to create symbolic link 'apt_pkg.cpython-34m-x86_64-linux-gnu.so': File exists
$ sudo cp apt_pkg.cpython-36m-x86_64-linux-gnu.so apt_pkg.so
cp: cannot stat 'apt_pkg.cpython-36m-x86_64-linux-gnu.so': No such file or directory
$ sudo apt-get install --reinstall python3-apt
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
gksu libgksu2-0 pencil2d snapd-login-service
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 393 not upgraded.
Need to get 0 B/147 kB of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 208998 files and directories currently installed.)
Preparing to unpack .../python3-apt_1.1.0~beta1ubuntu0.16.04.9_i386.deb ...
Unpacking python3-apt (1.1.0~beta1ubuntu0.16.04.9) over (1.1.0~beta1ubuntu0.16.04.9) ...
Setting up python3-apt (1.1.0~beta1ubuntu0.16.04.9) ...
$ sudo update-alternatives --set python3 /usr/bin/python3.7
我分别尝试了这些命令。但仍然得到：
$ sudo add-apt-repository "deb http://repo.mysql.com/apt/ubuntu/ xenial mysql-8.0"
Traceback (most recent call last):
File "/usr/bin/add-apt-repository", line 12, in <module>
from softwareproperties.SoftwareProperties import SoftwareProperties, shortcut_handler
File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 27, in <module>
import apt_pkg
ModuleNotFoundError: No module named 'apt_pkg'
坦白说，我对这个错误感到厌烦，我确信上述命令和 askubuntu.com 其他问题中给出的命令都不能满足我的需求。作为最后的希望，我发布了这个问题。请回答我。
我非常非常难过，AskUbuntu.com 无法解决我的问题
编辑：我的 dist-packages 中有以下内容：
当我使用此命令时：
$ sudo cp apt_pkg.cpython-35m-x86_64-linux-gnu.so apt_pkg.so
cp: cannot stat 'apt_pkg.cpython-35m-x86_64-linux-gnu.so': No such file or directory
答案1
尝试以下简单而古老的程序。
cd /usr/lib/python3/dist-packages
sudo cp --remove-destination apt_pkg.cpython-35m-x86_64-linux-gnu.so apt_pkg.so
欲了解更多详情，请点击以下链接。
https://itectec.com/ubuntu/ubuntu-modulenotfounderror-no-module-named-apt_pkg-error/