终结者不起作用

我安装了terminator它并且运行良好，但突然它停止工作。

当我添加终结器存储库时，出现此错误：

命令：

sudo add-apt-repository ppa:gnome-terminator/ppa

错误：

E：存储库“ http://ppa.launchpad.net/gnome-terminator/ppa/ubuntu bionic Release”没有发布文件。

当我terminator在终端中运行命令时，出现此错误：

File "/usr/bin/terminator", line 123
   except (KeyError,ValueError), ex:
                                ^
SyntaxError: invalid syntax
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 63, in apport_excepthook
    from apport.fileutils import likely_packaged, get_recent_crashes
  File "/usr/lib/python3/dist-packages/apport/__init__.py", line 5, in <module>
    from apport.report import Report
  File "/usr/lib/python3/dist-packages/apport/report.py", line 30, in <module>
    import apport.fileutils
  File "/usr/lib/python3/dist-packages/apport/fileutils.py", line 23, in <module>
    from apport.packaging_impl import impl as packaging
  File "/usr/lib/python3/dist-packages/apport/packaging_impl.py", line 24, in <module>
    import apt
  File "/usr/lib/python3/dist-packages/apt/__init__.py", line 23, in <module>
    import apt_pkg
ModuleNotFoundError: No module named 'apt_pkg'

Original exception was:
  File "/usr/bin/terminator", line 123
    except (KeyError,ValueError), ex:
                                ^
SyntaxError: invalid syntax

我使用python3.7和Ubuntu18.04

参考：

• 林斯特
• 终结者
• 问 ubuntu 问题
• 问 ubuntu 问题

更新

软件和更新：

这是我的软件并更新最新状态：

蟒路径：

ubuntu@ubuntu-Z97-D3H:~$ which python3;
/usr/bin/python3
ubuntu@ubuntu-Z97-D3H:~$ which python
/usr/bin/python
ubuntu@ubuntu-Z97-D3H:~$  ls -al $(which python python3)
lrwxrwxrwx 1 root root 24 Dec  9 08:46 /usr/bin/python -> /etc/alternatives/python
lrwxrwxrwx 1 root root  9 Oct 25  2018 /usr/bin/python3 -> python3.6
ubuntu@ubuntu-Z97-D3H:~$  dpkg -l | grep python | grep apt
ii  python-apt-common                          1.6.4                                           all          Python interface to libapt-pkg (locales)
ii  python3-apt                                1.6.4                                           amd64        Python 3 interface to libapt-pkg
ii  python3-aptdaemon                          1.1.1+bzr982-0ubuntu19.1                        all          Python 3 module for the server and client of aptdaemon
ii  python3-aptdaemon.gtk3widgets              1.1.1+bzr982-0ubuntu19.1                        all          Python 3 GTK+ 3 widgets to run an aptdaemon client
ubuntu@ubuntu-Z97-D3H:~$