title: After code change, how to start over debugging without restarting pdb?
body: <p>When debugging in pdb, I find an error and thus change the code.</p>
  
  <p>Now I would like to start over debugging. Can I do that without exiting pdb, so that I don't have to specify the command line arguments to my python script? Or do I need to exit pdb and then enter it again?</p>