title: Is it possible to create a mutually exclusive group inside another one with argparse (Python)?
body: <p>I am using <em>argparse</em> in Python, and I need to do this in console:</p>
  
  <pre><code>python3 my_program.py (-a | -b) | (-c | -d)
  </code></pre>
  
  <p>I read several forums and I guess the answer is no, but just in case. Is it possible?</p>