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Error on init() for unpickling NoValidConnectionError #617

rschlussel-zz opened this Issue Nov 9, 2015 · 1 comment


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rschlussel-zz commented Nov 9, 2015

If you try pickling and then unpickling NoValidConnectionError, you get the following exception:
TypeError: __init__() takes exactly 2 arguments (3 given)

It seems to be passing the errno and string with the error message while init expects a dict.

Here is some simple code to reproduce the issue:

from paramiko import ssh_exception.NoValidConnectionsError
import pickle
err = NoValidConnectionsError({'ab': ''})
p = pickle.dumps(err)
unpickled = pickle.loads(p)

A more practical application is for example if you are using the multiprocessing module and a child process raises a NoValidConnectionError.


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bitprophet commented Apr 24, 2016

Solved in #679.

@bitprophet bitprophet closed this Apr 24, 2016

bitprophet added a commit that referenced this issue Apr 24, 2016

Changelog re #617, #679, #678, #685.
Also re fabric/fabric#1429 but IDK if Github will tickle that repo correctly :D

dkhapun pushed a commit to cyberx-labs/paramiko that referenced this issue Jun 7, 2018

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