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 Codec in Python<file-codecs-py>`
class_docstr_tok: ["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","Codec","in","Python","<","file-codecs-py",">","`"]
code: def pulls_fd(self):
      return self._pulls_fd
  
imports: from __future__ import annotations
  import io
  import itertools
  import struct
  import sys
  from typing import Any, NamedTuple
  from .None import Image
  from ._deprecate import deprecate
  from ._util import is_path
label_desc: Use image node_id 1 for calling the PyDecoder obj's underlying member method code with example usage: obj.pulls_fd() and returns: self