code: def numpy_to_yaml(representer: Representer, data: np.ndarray) -> Sequence[Any]:
      
      return representer.represent_sequence(
          "!numpy_array",
          data.tolist()
      )
docs: Write a numpy array to YAML.
  
      It registers the array under the tag ``!numpy_array``.
  
      Use with:
  
      .. code-block:: python
  
          >>> yaml = ruamel.yaml.YAML()
          >>> yaml.representer.add_representer(np.ndarray, yaml.numpy_to_yaml)
  
      Note:
          We cannot use ``yaml.register_class`` because it won't register the proper type.
          (It would register the type of the class, rather than of `numpy.ndarray`). Instead,
          we use the above approach to register this method explicitly with the representer.