code: def _accept(prefix):
      return prefix[:4] == _MAGIC
  
imports: import struct
  import warnings
  from io import BytesIO
  from math import ceil, log
  from .None import BmpImagePlugin, Image, ImageFile, PngImagePlugin
  from ._binary import i8, i16le, i32le
label_desc: Use image node_id 2 for calling a global function with example usage: _accept(prefix) and returns: unknown