每当我尝试执行命令时 $ sudo pip install openpyxl
root@a2md23643l:~# pip install openpyxl
Downloading/unpacking openpyxl
Cleaning up...
Exception:
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main
status = self.run(options, args)
File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 304, in run
requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
File "/usr/lib/python2.7/dist-packages/pip/req.py", line 1178, in prepare_files
url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
File "/usr/lib/python2.7/dist-packages/pip/index.py", line 194, in find_requirement
page = self._get_page(main_index_url, req)
File "/usr/lib/python2.7/dist-packages/pip/index.py", line 568, in _get_page
session=self.session,
File "/usr/lib/python2.7/dist-packages/pip/index.py", line 694, in get_page
req, link, "connection error: %s" % exc, url,
TypeError: __str__ returned non-string (type Error)
Storing debug log for failure in /root/.pip/pip.log
我该怎么办？请提供帮助.. 我正在使用ubantu 15.04 python 2.7.9