GNOME 终端未在 Ubuntu 18.04 中打开

我将我的 python 从 3.6 升级到 3.7.1 从那以后我无法打开我的 GNOME 终端。我重新安装了gnome终端。使用命令

sudo apt-get remove gnome-terminal && sudo apt-get install gnome-terminal

但它没有打开。Ctrl+ Alt+T也不能正常工作。

我打开 Xterm 并输入“gnome-terminal”。

我收到这个错误

Cannot import name '_gi' from 'gi'(/usr/lib/python3/dist-packages/gi/__init__.py)

错误截图：

的输出ls -l /usr/bin/python3：

ls: cannot access '/usr/bin/python3': No such file or directory

我也在apt命令中收到错误：

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 iotop (0.6-2) ... /var/lib/dpkg/info/iotop.postinst: 6: /var/lib/dpkg/info/iotop.postinst: py3compile: not found dpkg: error processing package iotop (--configure): installed iotop package post-installation script subprocess returned error exit status 127 
Errors were encountered while processing: iotop 
E: Sub-process /usr/bin/dpkg returned an error code (1)