code: def _accept(prefix):
      return prefix[:8] == _MAGIC
  
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 3 for calling a global function with example usage: _accept(prefix) and returns: unknown