code: def _accept(prefix):
      return prefix[:2] == b"BM"
  
imports: import os
  from .None import Image, ImageFile, ImagePalette
  from ._binary import i16le
  from ._binary import i32le
  from ._binary import o8
  from ._binary import o16le
  from ._binary import o32le
label_desc: Use image node_id 1 for calling a global function with example usage: _accept(prefix) and returns: unknown