在 Windows 8、python 3.3 中创建虚拟环境时出现问题

我正在尝试在 Python 中创建虚拟环境，但无论重新安装 python-setuptools 和 pip 多少次，我总是会收到错误。

我的计算机运行的是 Windows 8，并且使用的是 Python 3.3。

E:\Documents\proj>virtualenv venv --distribute
Using base prefix 'c:\\Python33'
New python executable in venv\Scripts\python.exe
Installing setuptools, pip...
  Complete output from command E:\Documents\proj\venv\Scripts\python.exe -c "imp
ort sys, pip; pip...ll\"] + sys.argv[1:])" setuptools pip:
  Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "<frozen importlib._bootstrap>", line 1567, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1534, in _find_and_load_unlocked
  File "c:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\virtualenv_suppo
rt\pip-1.5-py2.py3-none-any.whl\pip\__init__.py", line 9, in <module>
  File "<frozen importlib._bootstrap>", line 1567, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1534, in _find_and_load_unlocked
  File "c:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\virtualenv_suppo
rt\pip-1.5-py2.py3-none-any.whl\pip\log.py", line 8, in <module>
  File "<frozen importlib._bootstrap>", line 1567, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1534, in _find_and_load_unlocked
  File "c:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\virtualenv_suppo
rt\setuptools-2.0.2-py2.py3-none-any.whl\pkg_resources.py", line 2696, in <modul
e>
  File "c:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\virtualenv_suppo
rt\setuptools-2.0.2-py2.py3-none-any.whl\pkg_resources.py", line 429, in __init_
_
  File "c:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\virtualenv_suppo
rt\setuptools-2.0.2-py2.py3-none-any.whl\pkg_resources.py", line 443, in add_ent
ry
  File "c:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\virtualenv_suppo
rt\setuptools-2.0.2-py2.py3-none-any.whl\pkg_resources.py", line 1722, in find_i
n_zip
  File "c:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\virtualenv_suppo
rt\setuptools-2.0.2-py2.py3-none-any.whl\pkg_resources.py", line 1298, in has_me
tadata
  File "c:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\virtualenv_suppo
rt\setuptools-2.0.2-py2.py3-none-any.whl\pkg_resources.py", line 1614, in _has
  File "c:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\virtualenv_suppo
rt\setuptools-2.0.2-py2.py3-none-any.whl\pkg_resources.py", line 1488, in _zipin
fo_name
AssertionError: c:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\EGG-INFO
\PKG-INFO is not a subpath of c:\Python33\lib\site-packages\virtualenv-1.11-py3.
3.egg\virtualenv_support\setuptools-2.0.2-py2.py3-none-any.whl\
----------------------------------------
...Installing setuptools, pip...done.
Traceback (most recent call last):
  File "C:\Python33\Scripts\virtualenv-script.py", line 9, in <module>
    load_entry_point('virtualenv==1.11', 'console_scripts', 'virtualenv')()
  File "C:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\virtualenv.py",
line 820, in main
    symlink=options.symlink)
  File "C:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\virtualenv.py",
line 988, in create_environment
    install_wheel(to_install, py_executable, search_dirs)
  File "C:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\virtualenv.py",
line 956, in install_wheel
    'PIP_NO_INDEX': '1'
  File "C:\Python33\lib\site-packages\virtualenv-1.11-py3.3.egg\virtualenv.py",
line 898, in call_subprocess
    % (cmd_desc, proc.returncode))
OSError: Command E:\Documents\proj\venv\Scripts\python.exe -c "import sys, pip;
pip...ll\"] + sys.argv[1:])" setuptools pip failed with error code 1

我找到了解决这个问题的办法。只有前几天发布的最新的virtualenv（v1.11）有这个问题。从站点包文件夹中删除 Egg 并通过以下方式安装以前的版本easy_install virtualenv==1.10.1，virtualenv 会正常工作。