title: using pexpect pxssh twice on two different ports
body: <p>I am trying to connect via SSH using pxssh to a remote device, however one of these devices is SSH port 2222 and one is 22. I know I can change the hardcoded value in pxssh.py to either 22 or 2222 but I don't know how I can do both at the same time. </p>
  
  <p>I looked at the pxssh login() function and tried putting 'port' after password, so when calling pxssh I could specify the port required e.g</p>
  
  <p>pxssh.py file</p>
  
  <pre><code>def login (self, server, username, password='', port, terminal_type='ansi',original
              _prompt=r"[#$]", login_timeout=10,
              auto_prompt_reset=True, ssh_key=None, quiet=True,
              sync_multiplier=1, check_local_ip=True):
  </code></pre>
  
  <p>calling pxssh login from my file</p>
  
  <pre><code>s.login(server, username, password, port) 
  </code></pre>
  
  <p>however that error'ed with</p>
  
  <pre><code>SyntaxError: non-default argument follows default argument
  </code></pre>
  
  <p>I then thought I could duplicate pxssh and have pxssh22.py and pxssh2222.py</p>
  
  <pre><code>if something:
       from pexpect import pxssh22
  else:
       from pexpect import pxssh2222
  </code></pre>
  
  <p>each specifying a different hard coded port number however that kept erroring with when called:</p>
  
  <pre><code>try:
      s = pxssh2222.pxssh()
      s.login(server, username, password)
  
  except pxssh2222.ExceptionPxssh as e:
  NameError: global name 'pxssh2222' is not defined
  </code></pre>
  
  <p>How could I use pxssh to access both port 2222 and 22. Thanks</p>