SSH Connection with Python 3.0

Question

How can I make an SSH connection in Python 3.0? I want to save a file on a remote computer where I have password-less SSH set up.

Dietrich Epp · Accepted Answer · 2013-09-11T19:06:49.710

14

I recommend calling ssh as a subprocess. It's reliable and portable.

import subprocess
proc = subprocess.Popen(['ssh', 'user@host', 'cat > %s' % filename],
                        stdin=subprocess.PIPE)
proc.communicate(file_contents)
if proc.retcode != 0:
    ...

You'd have to worry about quoting the destination filename. If you want more flexibility, you could even do this:

import subprocess
import tarfile
import io
tardata = io.BytesIO()
tar = tarfile.open(mode='w:gz', fileobj=tardata)
... put stuff in tar ...
proc = subprocess.Popen(['ssh', 'user@host', 'tar xz'],
                        stdin=subprocess.PIPE)
proc.communicate(tardata.getvalue())
if proc.retcode != 0:
    ...

edited Sep 11 '13 at 19:06

answered Jun 04 '09 at 22:47

Dietrich Epp

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proc.communicate(tardata) says TypeError: must be string or buffer, not _io.BytesIO – monty0 Sep 11 '13 at 19:04
then `tardata.getvalue()` has your answer – Dietrich Epp Sep 11 '13 at 19:06

score 2 · Answer 2 · edited Jun 13 '18 at 16:45

2

You want all of the ssh-functionality implemented as a python library? Have a look at paramiko, although I think it's not ported to Python 3.0 (yet?).

If you can use an existing ssh installation you can use the subprocess way Dietrich described, or (another way) you could also use pexpect (website here).

edited Jun 13 '18 at 16:45

0x2b3bfa0

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answered Jun 04 '09 at 22:55

ChristopheD

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That OP asked for Python 3 option, but you mentioned paramiko anyways. But I agree the downvote is undeserved, given that's not all you said. Forgive me. – tshepang Jan 10 '13 at 12:16
1

the [paramiko homepage](http://www.paramiko.org) now states that it also works with python 3.3+. Quote:"Paramiko is a Python (2.6+, 3.3+) implementation of the SSHv2 protocol [1], providing both client and server functionality..." – klaas Sep 22 '14 at 18:18

score 1 · Answer 3 · answered Aug 09 '13 at 19:55

First:

Two steps to login via ssh without password

in your terminal

[macm@macm ~]$  ssh-keygen
[macm@macm ~]$  ssh-copy-id -i $HOME/.ssh/id_rsa.pub root@192.168.1.XX <== change

Now with python

from subprocess import PIPE, Popen

cmd = 'uname -a'
stream = Popen(['ssh', 'root@192.168.1.XX', cmd],
                    stdin=PIPE, stdout=PIPE)

rsp = stream.stdout.read().decode('utf-8')
print(rsp)

score 0 · Answer 4 · edited May 23 '17 at 12:07

0

libssh2 works great for Python 3.x.
See this Stack Overflow article How to send a file using scp using python 3.2?

edited May 23 '17 at 12:07

Community

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answered May 06 '13 at 01:21

Don

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No documentation available. Links on the pypi project page are dead! – exhuma Dec 03 '13 at 09:42

Sebastian Noack · Answer 5 · 2011-02-28T12:39:19.473

0

I have written Python bindings for libssh2, that run on Python 2.4, 2.5, 2.6, 2.7 and 3.

edited Feb 28 '11 at 12:39

answered Feb 28 '11 at 11:42

Sebastian Noack

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score 0 · Answer 6 · answered Jun 04 '09 at 22:46

0

It might take a little work because "twisted:conch" does not appear to have a 3.0 variant.

answered Jun 04 '09 at 22:46

Richard

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SSH Connection with Python 3.0

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