#!/usr/bin/python

import difflib

import sys

try:

    textfile1=sys.argv[1]

    textfile2=sys.argv[2]

except Exception,e:

    print "Error:"+str(e)

    print "Usage: difflib_text.py filename1 filename2"

    sys.exit()

def readfile(filename):

    try:

	fileHandle = open (filename,'rb')

        text = fileHandle.read().splitlines()

   	fileHandle.close()

        return text

    except IOError as error:

    	print('Read file Error:'+str(error))

	sys.exit()

if textfile1=="" or textfile2=="":

    print "Usage: simple3.py filename1 filename2"

    sys.exit()

text1_lines = readfile(textfile1)

text2_lines = readfile(textfile2)

d = difflib.HtmlDiff()

print d.make_file(text1_lines,text2_lines)