code: def copy_labels(src, dst):
      
      labels = src.__dict__.get('_labels')
      if labels is None:
          return
      dst.__dict__['_labels'] = labels.copy()
docs: Copies all labels of one object to another object.
  
      :type  src: object
      :param src: The object to check read the labels from.
      :type  dst: object
      :param dst: The object into which the labels are copied.