class_docstr: Encodes numpy ndarray with compression into a spark dataframe field
docstr: Represent this as the following form:
  
  >>> CompressedNdarrayCodec()
docstr_tok: ["Represent","this","as","the","following","form",":",">",">",">","CompressedNdarrayCodec","(",")"]
code: def __str__(self):
      """Represent this as the following form:
  
      >>> CompressedNdarrayCodec()
      """
      return f"{type(self).__name__}()"
  
imports: from abc import abstractmethod
  from io import BytesIO
  import numpy
label_desc: Use image node_id 4 for calling the CompressedNdarrayCodec obj's underlying member method code with example usage: obj.__str__() and returns: type, str