code: def rp(self, *args):
          
          try:
              p = os.path.join(*args)
              if os.path.isabs(p):
                  return p
          except TypeError:
              pass
          return utilities.realpath(self.dirname, *args)
docs: Return canonical path to file under *dirname* with components *args*
  
           If *args* form an absolute path then just return it as the absolute path.