ubuntu下pip出錯的臨時解決辦法

今天pip忽然出問題了：

Traceback (most recent call last):
File "/usr/bin/pip", line 9, in <module>
load_entry_point('pip==1.5.6', 'console_scripts', 'pip')()
File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 356, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2476, in load_entry_point
return ep.load()
File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2190, in load
['name'])
File "/usr/lib/python2.7/dist-packages/pip/init.py", line 61, in <module>
from pip.vcs import git, mercurial, subversion, bazaar # noqa
File "/usr/lib/python2.7/dist-packages/pip/vcs/mercurial.py", line 9, in <module>
from pip.download import path_to_url
File "/usr/lib/python2.7/dist-packages/pip/download.py", line 25, in <module>
from requests.compat import IncompleteRead
ImportError: cannot import name IncompleteRead

看緣由應該是request庫的問題，去launchpad一查，果真不止我一個：https://bugs.launchpad.net/ubuntu/+source/python-pip/+bug/1306991。緣由貌似是個人request庫太新致使的。。。Orz

臨時解決辦法：手動備份刪除/usr/lib/python2.7/dist-packages/下的requests和request-x.x.x.dist-info兩個文件夾。