我刚刚安装了 ubuntu 14.04LTS，我正在尝试使用 pip，但我得到了以下回溯：
(nlmanagement)psychok7@Ultrabook:~/code/work/nlmanagement$ pip freeze
Traceback (most recent call last):
File "/home/psychok7/code/work/venv/nlmanagement/bin/pip", line 9, in <module>
load_entry_point('pip==1.1', 'console_scripts', 'pip')()
File "/home/psychok7/code/work/venv/nlmanagement/local/lib/python2.7/site-packages/distribute-0.6.24-py2.7.egg/pkg_resources.py", line 337, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/home/psychok7/code/work/venv/nlmanagement/local/lib/python2.7/site-packages/distribute-0.6.24-py2.7.egg/pkg_resources.py", line 2279, in load_entry_point
return ep.load()
File "/home/psychok7/code/work/venv/nlmanagement/local/lib/python2.7/site-packages/distribute-0.6.24-py2.7.egg/pkg_resources.py", line 1989, in load
entry = __import__(self.module_name, globals(),globals(), ['__name__'])
File "/home/psychok7/code/work/venv/nlmanagement/local/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/__init__.py", line 10, in <module>
from pip.backwardcompat import walk_packages, console_to_str
File "/home/psychok7/code/work/venv/nlmanagement/local/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/backwardcompat.py", line 77, in <module>
from urllib2 import URLError, HTTPError
File "/usr/lib/python2.7/urllib2.py", line 94, in <module>
import httplib
File "/usr/lib/python2.7/httplib.py", line 79, in <module>
import mimetools
File "/usr/lib/python2.7/mimetools.py", line 6, in <module>
import tempfile
File "/usr/lib/python2.7/tempfile.py", line 32, in <module>
import io as _io
File "/usr/lib/python2.7/io.py", line 51, in <module>
import _io
ImportError: No module named _io
有什么想法吗？我试过sudo apt-get install python3-pip了sudo apt-get install python-pip
答案1
这个问题的答案是 尤瓦尔·亚当在此 Stack Overflow 帖子：
由于 Python 系统库中的差异，您的虚拟环境已损坏。
最好的选择是重新安装你的虚拟环境：
$ deactivate $ rmvirtualenv nlmanagement $ mkvirtualenv nlmanagement $ pip install -r requirements.txt