堆栈跟踪结束:
File "/usr/lib/python2.7/random.py", line 47, in <module>
from os import urandom as _urandom
ImportError: cannot import name urandom
There was a problem importing our SSH library (see traceback above).
在 11.10 中不存在这个问题。升级到 12.04 后才出现问题。我该如何修复?