Ubuntu dpkg:处理 xxx (--configure)时出错解决办法

当我执行apt-get install xxx 命令时报下面错误：

Traceback (most recent call last):

  File "/usr/bin/pycompile", line 36, in <module>
    from debpython.version import SUPPORTED, debsorted, vrepr, \
  File "/usr/share/python/debpython/version.py", line 24, in <module>
    from ConfigParser import SafeConfigParser
ImportError: No module named ConfigParser
dpkg: error processing mercurial-common (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of mercurial:
 mercurial depends on mercurial-common (= 2.0.2-1ubuntu1); however:
  Package mercurial-common is not configured yet.
dpkg: error processing mercurial (--configure):
 dependency problems - leaving unconfigured
Setting up libnettle4 (2.4-1) ...
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          Setting up libarchive12 (3.0.3-6ubuntu1) ...
Setting up libxmlrpc-core-c3 (1.16.33-3.1ubuntu5.1) ...
Setting up emacsen-common (1.4.22ubuntu1) ...
emacsen-common: Handling install of emacsen flavor emacs
Setting up cmake-data (2.8.7-0ubuntu4) ...
emacsen-common: Handling install of emacsen flavor emacs
Setting up cmake (2.8.7-0ubuntu4) ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
Errors were encountered while processing:
 mercurial-common
 mercurial

E: Sub-process /usr/bin/dpkg returned an error code (1)

参考网上的解决方案：

1.$ sudo mv /var/lib/dpkg/info /var/lib/dpkg/info_old //现将info文件夹更名
2.$ sudo mkdir /var/lib/dpkg/info //再新建一个新的info文件夹
3.$ sudo apt-get update, apt-get -f install //不用解释了吧
4.$ sudo mv /var/lib/dpkg/info/* /var/lib/dpkg/info_old //执行完上一步操作后会在新的info文件夹下生成一些文件，现将这些文件全部移到info_old文件夹下
5.$ sudo rm -rf /var/lib/dpkg/info //把自己新建的info文件夹删掉
6.$ sudo mv /var/lib/dpkg/info_old /var/lib/dpkg/info //把以前的info文件夹重新改回名字