Exception before prompting for password during ssh connection

[amir-f]

Setup

Win 7 x64

ipython==0.12.1
paramiko==1.7.7.2
pyzmq==2.2.0

Issue

I want to connect an IPython qtconsole on Windows to an IPython kernel on a remote linux box through ssh2.

I made the following changes in ipython_qtconsole_config.py:

#### Path to the ssh key to use for logging in to the ssh server.
import os
c.IPythonQtConsoleApp.sshkey = os.path.expanduser('~')+'\\.ssh\\id_dsa'

When I run
ipython qtconsole --IPythonQtConsoleApp.sshserver='user@hostname' --existing kernel-21449.json

I receive:

[IPythonQtConsoleApp] Could not setup tunnels
Traceback (most recent call last):
  File "C:\Python27\lib\site-packages\IPython\frontend\consoleapp.py", line 289, in init_ssh
    newports = tunnel_to_kernel(info, self.sshserver, self.sshkey)
  File "C:\Python27\lib\site-packages\IPython\lib\kernel.py", line 248, in tunnel_to_kernel
    password = getpass("SSH Password for %s: "%sshserver)
  File "C:\Python27\lib\getpass.py", line 95, in win_getpass
    msvcrt.putch(c)
TypeError: must be char, not unicode

For now, I edited IPython/lib/kernel.py:248 as a temporary workaround in the following way:

password = getpass("SSH Password for %s: "%sshserver.encode('ascii','ignore'))