Python SSH登陆--pexpect，pxssh

from pexpect import pxssh

host = '192.168.80.139'
user = 'allen'
password = 'allen'
command = 'df -h'

def connect(hostname, username, password):
    try:
        s = pxssh.pxssh()
        s.login(hostname, username, password)
        return s
        #print s
    except pxssh.ExceptionPxssh, e:
        print str(e)

def send_command(ssh_session, command):
    ssh_session.send(command)
    ssh_session.prompt()
    print ssh_session.before

def main():
    session = connect(host, user, password)
    send_command(session, command)
    session.logout()

if __name__ == '__main__':
    main()

http://pexpect.sourceforge.net/pexpect.html