Resolve Method:
I found the problem. I had manually installed a newer version of python (version
3.2 but the version installed through packages is 2.7) and I just redirected /usr/bin/python to python3.2.
Apparently in 3.2 some syntax used in /usr/bin/pyclean is
not valid anymore. Restoring the original link of /usr/bin/python to /usr/bin/python2 solved
the problem. Now the scripts could be run without any issues.
the link: StackOverflow
按照這想法，我順利解決了這個問題。
我的系統是ubuntu 14.04，安裝了python2.7
看到這裏後，安裝了python3，並按順序執行以下命令
# 修改python爲python2
rm /usr/bin/python
ln -s /usr/bin/python2 /usr/bin/python
# 刪除python-configparser，再通過aptitude來安裝
sudo apt-get purge --auto-remove python-configparser
sudo aptitude install python-configparser