code: def load_prepare(self):
      if self.__frame == 0:
          if "transparency" in self.info:
              self.im = Image.core.fill(
                  self.mode, self.size, self.info["transparency"]
              )
      else:
          self._prev_im = self.im
          if self._frame_palette:
              self.mode = "P"
              self.im = Image.core.fill(
                  "P", self.size, self._frame_transparency or 0
              )
              self.im.putpalette(*self._frame_palette.getdata())
              self._frame_palette = None
          else:
              self.mode = "L"
              self.im = None
  
      super().load_prepare()
  
imports: import itertools
  import math
  import os
  import subprocess
  from .None import Image, ImageChops, ImageFile, ImagePalette, ImageSequence
  from ._binary import i16le
  from ._binary import o8
  from ._binary import o16le
label_desc: Use image node_id 7 for calling the GifImageFile obj's underlying member method code with example usage: obj.load_prepare() without return types