無法刪除 Python 3.6

我在 Azure 上設置了一個執行 Ubuntu 的虛擬機：

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.5 LTS
Release:    16.04
Codename:   xenial

然後驗證 Python 二進製文件和版本：

$ which python
/usr/bin/python
$ python --version
Python 2.7.12
$ which python3
/usr/bin/python3
$ python3 --version
Python 3.5.2

我安裝了 Python 3.6

$ sudo add-apt-repository ppa:deadsnakes/ppa
$ sudo apt-get update
$ sudo apt-get install python3.6

然後我刪除了它

$ sudo apt-get remove python3.6
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
 libpython3.6-minimal libpython3.6-stdlib python3.6-minimal
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED:
 python3.6
0 upgraded, 0 newly installed, 1 to remove and 6 not upgraded.
After this operation, 334 kB disk space will be freed.
Do you want to continue? [Y/n] Y
(Reading database ... 85368 files and directories currently installed.)
Removing python3.6 (3.6.8-1+xenial1) ...
Processing triggers for mime-support (3.59ubuntu1) ...
Processing triggers for man-db (2.7.5-1) ...

但它仍然安裝：

$ python3 --version
Python 3.5.2
$ python3.6 --version
Python 3.6.8

現在我不能再刪除它，因為apt-get說它沒有安裝：

$ sudo apt-get remove python3.6
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package 'python3.6' is not installed, so not removed
The following packages were automatically installed and are no longer required:
 libpython3.6-minimal libpython3.6-stdlib python3.6-minimal
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 6 not upgraded.

我怎樣才能刪除它？

您需要刪除與以下內容一起安裝的軟體包python3.6：

sudo apt autoremove

這將刪除apt-get告訴您何時刪除的軟體包python3.6：

The following packages were automatically installed and are no longer required:
 libpython3.6-minimal libpython3.6-stdlib python3.6-minimal
Use 'sudo apt autoremove' to remove them.

包括python3.6-minimal哪個是python3.6二進製文件的來源。

這裡任何嘗試或想要嘗試相同事情的人，不要在 Ubuntu 上以這種方式刪除 Python3！它可能會刪除您的整個 ubuntu 桌面。如果您遇到問題：

sudo apt-get install python3-all
sudo apt-get install gnome-terminal
sudo apt-get install ubuntu-desktop

如果您無法打開終端，請按Ctrl++Alt獲取F1shell 並執行相同的命令。

引用自：https://unix.stackexchange.com/questions/493722