#!/usr/bin/env python
#coding:utf-8
import difflib

#字符串比较
text1 = """text1:
This module provides classes and functions for comparing sequences.
including HTML and context and unified diffs
difflib document V7.4
and string
"""
text1_lines = text1.splitlines() #按行切割
text2 = """text2:
This module provides classes and functions for comparing sequences.
including HTML and context and unifiled diffs.
difflb document V7.5"""
text2_lines = text2.splitlines()

def diffstr():
    d = difflib.Differ()  #创建Differ对象
    diff = d.compare(text1_lines,text2_lines)
    print "\n".join(list(diff))

    d = difflib.HtmlDiff()  #生成html,用 python difflib_l1.py > result.html,网页查看结果
    print d.make_file(text1_lines,text2_lines)

#文件比较
import sys
try:
    textfile1 = sys.argv[1]
    textfile2 = sys.argv[2]
except Exception,e:
    print "Error:" + str(e)
    print "Usage: ./simple filename1 filename2"
    sys.exit()

def readline(filename): #等于文件读取函数
    try:
        fileHandle = open(filename,'rb')
        text = fileHandle.read().splitlines() #读取文件内容，按行切割
        fileHandle.close()
        return text
    except IOError as error:
        print("Read file  Error:"+str(error))
        sys.exit()

text1_lines = readline(textfile1)
text2_lines = readline(textfile2)

d = difflib.HtmlDiff()
print d.make_file(text1_lines,text2_lines)