text: def has_magnet(self):
      """Return if the Hole has magnets
  
      Parameters
      ----------
      self : HoleM50
          A HoleM50 object
  
      Returns
      -------
      has_magnet : bool
          True if the magnets are not None
      """
  
      return self.magnet_0 is not None or self.magnet_1 is not None
  