virtualenv ImportError：没有名为 _struct 的模块

Question

我正在尝试在 fedora 上运行 virtualenv。我得到以下输出。

在同一个会话中，我做了 PYTHONHOME=/usr/bin/python2.7 和 PYTHONPATH=/lib/python2.7

Traceback (most recent call last):
  File "/usr/bin/virtualenv", line 7, in <module>
    from virtualenv import main
  File "/usr/lib/python2.7/site-packages/virtualenv.py", line 16, in <module>
    import base64
  File "/usr/lib64/python2.7/base64.py", line 9, in <module>
    import struct
  File "/usr/lib64/python2.7/struct.py", line 1, in <module>
    from _struct import *
ImportError: No module named _struct