Errors were encountered while processing: /var/cache/apt/archives/python-rosdistro-modules_0.7.0-1

环境：ROS indigo，Ubuntu14.04

重装ubuntu后再装ros时出现以下错误信息：Unpacking ros-indigo-desktop-full (1.1.6-0trusty-20181006-135515-0800) ...
Errors were encountered while processing:
 /var/cache/apt/archives/python-catkin-pkg-modules_0.4.7-1_all.deb
 /var/cache/apt/archives/python-catkin-pkg_0.4.7-100_all.deb
 /var/cache/apt/archives/python-rosdistro-modules_0.7.0-1_all.deb
 /var/cache/apt/archives/python-rosdistro_0.7.0-100_all.deb

尝试许多其他方法均无法解决，最后参考https://blog.youkuaiyun.com/djfjkj52/article/details/85805146的解决方法如下：
××××××××××××××××××××××××××××××××××××××××××××××××××××××××××
导致这种问题一般是第一次安装，中途打断安装导致
解决方法：卸载ros
$sudo apt-get remove ros-indigo-desktop-full
$sudo apt-get remove ros-*  #但是不确定会不会删除其它不必要的包。
更新dpkg：
$sudo apt-get install dpkg
接下来重新安装就可以了

安装rosinstall的时候遇到同样的问题。Errors were encountered while processing:.........
Errors were encountered while processing:
 mercurial
 python-vcstools
 python-wstool
 python-rosinstall
E: Sub-process /usr/bin/dpkg returned an error code (1)
同样：上述操作
$sudo mv /var/lib/dpkg/info/ /var/lib/dpkg/info_backup/
$sudo mkdir /var/lib/dpkg/info/
$sudo apt-get update
$sudo apt-get install python-rosinstall
××××××××××××××××××××××××××××××××××××××××××××××××××××××××××

但是卸载ros时导致ubuntu安装的桌面系统等被删除，此时需要重装：
$ sudo apt-get install ubuntu-minimal ubuntu-standard ubuntu-desktop；
然后rm -f .Xauthority，如果没有这一步，重启后可能在登录界面输入密码后进入不了ubuntu界面