我试图更新Python，但我不知道版本的隔离，而是删除了版本，所以，我已经删除了Ubuntu 16.04 VPS中的所有Python版本。现在我无法通过apt-get安装任何东西。
：
root@vps15:/# apt-get install --reinstall python3.5
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
dh-python : Depends: python3:any (>= 3.3.2-2~)
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
我尝试手动将Python 2.7源代码安装到/usr/lib，现在可以使用了，但现在的问题是这个依赖关系：；dh-python"；。
# apt-get install python3.5-minimal
Reading package lists... Done
Building dependency tree
Reading state information... Done
python3.5-minimal is already the newest version (3.5.2-2ubuntu0~16.04.5).
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
python3.5-minimal : Depends: libpython3.5-minimal (= 3.5.2-2ubuntu0~16.04.5) but it is not installable
Recommends: python3.5 but it is not installable
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
我已经尝试了列出的所有方法，但无法修复依赖关系。
在尝试修复之前，问题是Python2.7，而不是python3，现在手动安装的python3.没有修复问题。
经过更多的研究，我创建了一个与Debian相关的帖子。为Ubuntu 16.04处理一些修改，尝试了这个指南，现在一切正常：
步骤1
cd /tmp
apt-get download libpython3.5-minimal
apt-get download python3.5-minimal
apt-get download python3-minimal
apt-get download libpython3.5-stdlib
apt-get download python3.5
步骤2
rm -rf /usr/local/lib/python3.5*
rm -rf /usr/local/bin/python3.5*
update-alternatives --remove python3 /usr/local/bin/python3.5
hash -r # removes cached python3 binary path
步骤3
cd /tmp
dpkg-deb -x libpython3.5-minimal_3.5.2-2ubuntu0~16.04.13_amd64.deb missing
dpkg-deb -x libpython3.5-stdlib_3.5.2-2ubuntu0~16.04.13_amd64.deb missing
dpkg-deb -x python3.5-minimal_3.5.2-2ubuntu0~16.04.13_amd64.deb missing
dpkg-deb -x python3.5_3.5.2-2ubuntu0~16.04.13_amd64.deb missing
dpkg-deb -x python3-minimal_3.5.1-3_amd64.deb missing
步骤4
cd /tmp/missing
ls -lR /tmp/missing # if you are curious about overwriting your HD
sudo cp -rpfv /tmp/missing/* /
步骤5
python3
Python 3.7.3 (default, Apr 3 2019, 05:39:12)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>
导入并测试新版本：
>>> import sys
>>> print(sys.version_info)
sys.version_info(major=3, minor=7, micro=3, releaselevel='final', serial=0)
>>>
>>> quit()
步骤6
rm -rf /tmp/missing
步骤7
dpkg -s -a python3.5 | grep reinstreq
# Any listing also needs to be reinstalled along with python3
apt-get install --reinstall python3
步骤8
apt-get autoclean
apt-get autoremove
# (see the packages that will autoremove, you need to reinstall it again after: apt-get install --fix-broken --reinstall <<packages>>)
步骤9
试着安装普通道具。
sudo apt install software-properties-common
如果它工作，现在安装完成。
我在Ubuntu 16.04上尝试过这一点，安装了Python2.7，但没有安装Python3或Python3.5。我最初安装的是Python3.5，这就是为什么我尝试安装最新版本。
感谢您为我指出根本原因。对我来说，问题是pip安装的distro_info软件包损坏，而pip本身损坏严重，我无法通过pip uninstall卸载该软件包。我删除了/usr/local/lib/python3.8，所以do-release-upgrade将使用/usr/lib/python3.8下的原始Ubuntu包。这解决了问题。我是从20.04更新的=>22.04.