我有一个python脚本，它同时使用多个SSH链接到多个远程服务器。有时当脚本完成时，我认为在垃圾收集期间，我遇到了这个例外：
Exception in thread Thread-7 (most likely raised during interpreter shutdown):
Traceback (most recent call last):
File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
File "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 1574, in run
<type 'exceptions.AttributeError'>: 'NoneType' object has no attribute 'error'
Exception in thread Thread-5 (most likely raised during interpreter shutdown):
Traceback (most recent call last):
File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
File "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 1574, in run
<type 'exceptions.AttributeError'>: 'NoneType' object has no attribute 'error'
Exception in thread Thread-4 (most likely raised during interpreter shutdown):
Traceback (most recent call last):
File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
File "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 1574, in run
<type 'exceptions.AttributeError'>: 'NoneType' object has no attribute 'error'
Exception in thread Thread-1 (most likely raised during interpreter shutdown):
Traceback (most recent call last):
File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
File "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 1574, in run
<type 'exceptions.AttributeError'>: 'NoneType' object has no attribute 'error'
我用Google搜索Exception in thread Thread-7 (most likely raised during interpreter shutdown)，我发现有时在多线程脚本中杀死线程会导致此异常。这对我来说真的很奇怪，因为我的脚本中没有线程。另一方面，它似乎与paramiko有关，而且我非常确定我不会使用线程来创建SSH链接;我只有多个打开的shell到多个服务器（可能有多个shell连接到一个特定的服务器）。关于异常来源的任何想法??