Program to solve HTB challenge

mapper.py

import sys

#print "file: "  + sys.argv[1]
myKeys = open(sys.argv[1])
#keymappings ref (pag 53) https://www.usb.org/sites/default/files/documents/hut1_12v2.pdf 
newmap = {
 2: "PostFail",
 4: "a", 5: "b", 6: "c", 7: "d", 8: "e",
 9: "f", 10: "g", 11: "h", 12: "i", 13: "j",
 14: "k", 15: "l", 16: "m", 17: "n", 18: "o",
 19: "p", 20: "q", 21: "r", 22: "s", 23: "t",
 24: "u", 25: "v", 26: "w", 27: "x", 28: "y", 29: "z",
 30: "1", 31: "2", 32: "3", 33: "$", 34: "5", 35: "6", 36: "7", 37: "8", 38: "9", 39: "0",
 40: "Enter", 41: "esc", 42: "del", 43: "tab", 44: "space",
 45: "-", 46: "=", 47: "{", 48: "}",49: "|",  52: "'", 55: ".", 56: "/", 57: "CapsLock",
 79: "RightArrow", 80: "LetfArrow"} 
i = 1
for line in myKeys:
 bytesArray = bytearray.fromhex(line.strip())
# print "Line Number: " + str(i)
 for byte in bytesArray:
   if byte != 0:
    # print "byte " + str(byte)
     keyVal = int(byte)
     #print  "keyVal " + str(keyVal)
     if keyVal in newmap:
       print newmap[keyVal]
     else:
       print "No map found for this value: " + str(keyVal)
 #print format(byte, '02X')
 i+=1