title: argparse argument order
body: <p>I have a little problem.</p>
  
  <p>I use <code>argparse</code> to parse my arguments, and it's working very well.</p>
  
  <p>To have the args, I do :</p>
  
  <pre><code>p_args = parser.parse_args(argv)
  args = dict(p_args._get_kwargs())
  </code></pre>
  
  <p>But the problem with <code>p_args</code> is that I don't know how to get these arguments ordered by their position in the command line, because it's a dict.</p>
  
  <p>So is there any possibility to have the arguments in a tuple/list/ordered dict by their order in the command line?</p>