code: def _getexif(self):
      if "exif" not in self.info:
          self.load()
      if "exif" not in self.info:
          return None
      return dict(self.getexif())
  
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 7 for calling the PngImageFile obj's underlying member method code with example usage: obj._getexif() and returns: dict, None