16.04 LTS，dpkg设置更新-通知程序失败-公共

Question

当更新运行dpkg时，我得到以下错误：

Unpacking debconf (1.5.58ubuntu1) over (1.5.58ubuntu1) ...  
Setting up debconf (1.5.58ubuntu1) ...  
Setting up update-notifier-common (3.168.8) ...  
Traceback (most recent call last):  
  File "/usr/lib/update-notifier/package-data-downloader", line 24, in <module>
    import debian.deb822  
  File "/usr/lib/python3/dist-packages/debian/deb822.py", line 47, in <module>
    import six  
ImportError: No module named 'six'  
dpkg: error processing package update-notifier-common (--configure):  
 subprocess installed post-installation script returned error exit status 1  
dpkg: dependency problems prevent configuration of update-notifier:  
 update-notifier depends on update-notifier-common (= 3.168.8); however:  
  Package update-notifier-common is not configured yet.  

dpkg: error processing package update-notifier (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of update-manager:
 update-manager depends on update-notifier; however:
  Package update-notifier is not configured yet.

dpkg: error processing package update-manager (--configure):  
 dependency problems - leaving unconfigured  
dpkg: dependency problems prevent configuration of ubuntu-release-upgrader-gtk:  
 ubuntu-release-upgrader-gtk depends on update-manager; however:  
  Package update-manager is not configured yet.  

dpkg: error processing package ubuntu-release-upgrader-gtk (--configure):  
 dependency problems - leaving unconfigured  
No apport report written because the error message indicates its a followup error from a previous failure.    
                          No apport report written because the error message  
 indicates its a followup error from a previous failure.  
                                                    No apport report written because MaxReports is reached already  
                                  Processing triggers for man-db (2.7.5-1) ...  
Errors were encountered while processing:    
 update-notifier-common   
 update-notifier  
 update-manager  
 ubuntu-release-upgrader-gtk  
E: Sub-process /usr/bin/dpkg returned an error code (1)  

这似乎与python有关。系统上有python3.5和3.6.5。

Answer 1

我已经将系统python3指向python3.6，dpkg错误消失了。我仍然对此感到不舒服，但到目前为止，我所有依赖于python3的代码似乎都正常工作。