我试图删除我的Ubuntu 16.04上所有已安装的python。就目前而言，我知道我不应该这样做。但是，仅尝试重新安装python无效。
当我尝试
$ sudo apt install -f --reinstall python3
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
python3-doc python3-tk python3-venv
The following NEW packages will be installed:
python3
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
4 not fully installed or removed.
Need to get 0 B/8,710 B of archives.
After this operation, 68.6 kB of additional disk space will be used.
Setting up python3.5-minimal (3.5.2-2ubuntu0~16.04.5) ...
# Empty sitecustomize.py to avoid a dangling symlink
Could not find platform independent libraries <prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ImportError: No module named 'encodings'
Current thread 0x00007fc6b52dd700 (most recent call first):
Aborted
dpkg: error processing package python3.5-minimal (--configure):
subprocess installed post-installation script returned error exit status 134
dpkg: dependency problems prevent configuration of python3-minimal:
python3-minimal depends on python3.5-minimal (>= 3.5.1-2~); however:
Package python3.5-minimal is not configured yet.
dpkg: error processing package python3-minimal (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
python3.5-minimal
python3-minimal
E: Sub-process /usr/bin/dpkg returned an error code (1)
$ python3
Could not find platform independent libraries <prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ImportError: No module named 'encodings'
Current thread 0x00007f87215c4700 (most recent call first):
Aborted
我尝试安装一些依赖项，但发现没有任何帮助
$ sudo apt-get -f 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-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).
曾经尝试过不同的方法，但是到现在为止，我对如何解决这个问题一无所知
$ sudo apt-get -f install dh-python
Reading package lists... Done
Building dependency tree
Reading state information... Done
dh-python is already the newest version (2.20151103ubuntu1.1).
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).
答案 0 :(得分：2)
在 ubuntu 从 16 升级到 18 后，我在 python3 上遇到了类似的问题。但是您可以尝试在 16 上使用我的解决方案。只需对 apt-get 使用 apt
注意：我需要在我的系统中安装 python2.7。
我遵循了这些步骤：
卸载所有python3包：
sudo apt remove python3 && sudo apt autoremove
但这对我没有帮助。所以会尝试定义系统中仍然存在哪些包：
apt list --installed | grep python*
//possible output:
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
libpython-stdlib/bionic,now 2.7.15~rc1-1 amd64 [installed,automatic]
libpython2.7-minimal/bionic-updates,bionic-security,now 2.7.17-1~18.04ubuntu1.2 amd64 [installed,automatic]
libpython2.7-stdlib/bionic-updates,bionic-security,now 2.7.17-1~18.04ubuntu1.2 amd64 [installed,automatic]
libpython3-stdlib/bionic-updates,now 3.6.7-1~18.04 amd64 [installed]
libpython3.5/now 3.5.2-2ubuntu0~16.04.12 amd64 [installed,local]
libpython3.5-minimal/now 3.5.2-2ubuntu0~16.04.12 amd64 [installed,local]
libpython3.5-stdlib/now 3.5.2-2ubuntu0~16.04.12 amd64 [installed,local]
libpython3.6/bionic-updates,bionic-security,now 3.6.9-1~18.04ubuntu1.3 amd64 [installed,automatic]
libpython3.6-minimal/bionic-updates,bionic-security,now 3.6.9-1~18.04ubuntu1.3 amd64 [installed,automatic]
libpython3.6-stdlib/bionic-updates,bionic-security,now 3.6.9-1~18.04ubuntu1.3 amd64 [installed,automatic]
python/bionic,now 2.7.15~rc1-1 amd64 [installed]
python-apt-common/bionic-updates,bionic-updates,bionic-security,bionic-security,now 1.6.5ubuntu0.5 all [installed]
python-minimal/bionic,now 2.7.15~rc1-1 amd64 [installed,automatic]
python2.7/bionic-updates,bionic-security,now 2.7.17-1~18.04ubuntu1.2 amd64 [installed,automatic]
python2.7-minimal/bionic-updates,bionic-security,now 2.7.17-1~18.04ubuntu1.2 amd64 [installed,automatic]
我们可以看到，一些python3包在系统中。将删除它们。
sudo apt remove libpython3-stdlib libpython3.5 libpython3.5-minimal libpython3.5-stdlib libpython3.6 libpython3.6-minimal libpython3.6-stdlib
现在，尝试安装python3
sudo apt install python3
一切正常
答案 1 :(得分：0)
也许最好用sudo dpkg -i从deb软件包中安装python吗？您可以下载from here，例如
答案 2 :(得分：0)
您应该尝试：
sudo apt-get update
然后尝试使用以下命令卸载
sudo apt purge python3.x-minimal
如果成功卸载，则
sudo apt-get install python3.6