code: def chunk_IDAT(self, pos, length):
      # image data
      self.im_tile = [
          ("zip", (0, 0) + self.im_size, pos, self.im_rawmode)
      ]
      self.im_idat = length
      raise EOFError
  
imports: import logging
  import re
  import struct
  import zlib
  from .None import Image, ImageFile, ImagePalette
  from ._binary import i8, i16be, i32be, o16be, o32be
  from ._util import py3
label_desc: Use image node_id 5 for calling the PngStream obj's underlying member method code with example usage: obj.chunk_IDAT(pos, length) without return types