[Python]PHP Base 64 Encoder

import base64, sys, os

def main() :

  try :
    Input = str(sys.argv[1])
    Output = str(sys.argv[2])
  except:
    print "\n[*]Usage: %s <Input file> <Output file>" % os.path.basename(sys.argv[0])
    exit()

  try :
    ifile = open(Input, "rb").read()
  except :
    print "\n[-]Sorry, couldn't open input file"
    exit()

  try :
    if "<?php" in ifile :
      ifile = ifile.replace("<?php", "")

    if "<?" in ifile :
      ifile = ifile.replace("<?", "")

    ifile = ifile.replace("?>", "")
  except :
    pass

  x = "<?php\neval(base64_decode('"
  y = base64.b64encode(ifile)
  z = "'));\n?>"

  try :
    ofile = open(Output, "w")
    ofile.write(x + y + z)
    ofile.close()
    print "\n[+]Done ;)"
  except :
    print "\n[-]Sorry, couldn't make output file"

main()