code: def deHexString(h):
      import binascii
  
      h = bytesjoin(h.split())
      return binascii.unhexlify(h)
  
imports: from fontTools.misc.textTools import bytechr, bytesjoin, byteord
label_desc: Use image node_id 6 for calling a global function with example usage: deHexString(h) and returns: binascii