execute local python script over sshClient() with Paramiko in remote machine

You cannot just execute python function through ssh. ssh is just a tunnel with your code on one side (client) and shell on another (server). You should execute shell commands on remote side.

If using raw ssh code is not critical, i suggest fabric as library for writing administration tools. It contains tools for easy ssh handling, file transferring, sudo, parallel execution and other.

I think you might want change the paramaters you're passing into ssh.exec_command Here's an idea:

Instead of doing:

def get_dir():
    return ', '.join(os.listdir(os.getcwd()))

i, o, e = ssh.exec_command(getDir())

You might want to try:

i, o, e = ssh.exec_command('pwd')
o.printlines()

And other things to explore:

• Writing a bash script or a Python that lives on your servers. You can use Paramiko to log onto the server and executing the script with ssh.exec_command(some_script.sh) or ssh.exec_command(some_script.py)
• Paramiko has some FTP/SFTP utilities so you can actually use it to put the script on the server and then execute it.