A tiny python script to write hex values to a file directly.

hexWriter.py

import sys
  2 import binascii
  3 
  4 if len(sys.argv) < 3:
  5     print("Proper Usage is: hexWriter.py [inputFile] [outputFile]")
  6     print("The file must have hex digits seperated by spaces.")
  7 else:
  8     content = open(sys.argv[1])
  9     content = content.read()[:-1].split(" ") #Slice off that pesky extra \n
 10     output = binascii.a2b_hex(''.join(content))
 11     out = open(sys.argv[2], "w+")
 12     out.write(output)
# Example File : 47 49 46 38 39 61 0A 00 0A 00 91 00 00 FF FF FF FF 00 00 00 00 FF 00 00 00 21 F9 04 00 00 00 00 00 2C 00 00 00 00 0A 00 0A 00 00 02 16 8C 2D 99 87 2A 1C DC 33 A0 02 75 EC 95 FA A8 DE 60 8C 04 91 4C 01 00 3B