class_docstr: Python implementation of a format decoder. Override this class and
  add the decoding logic in the :meth:`decode` method.
  
  See :ref:`Writing Your Own File Decoder in Python<file-decoders-py>`
docstr: Override to perform decoder specific cleanup
  
  :returns: None
docstr_tok: ["Override","to","perform","decoder","specific","cleanup",":","returns",":","None"]
code: def cleanup(self):
      """
      Override to perform decoder specific cleanup
  
      :returns: None
      """
      pass
  
imports: import io
  import itertools
  import struct
  import sys
  from .None import Image
  from ._util import isPath
label_desc: Use image node_id 5 for calling the PyDecoder obj's underlying member method code with example usage: obj.cleanup() without return types