Python之文件不同对比

#!/usr/local/bin/python3.5
#-*- coding:utf-8 -*-
import difflib
import sys

try:
textfile1 = sys.argv[1]
textfile2 = sys.argv[2]
except Exception as e:
print("Error:" + str(e))
print("Usage: 3.py filename1 filename2")
sys.exit()

def readfile(filename):
try:
fileHandle = open(filename,'r+')
text = fileHandle.read().splitlines()
fileHandle.close()
return text
except IOError as error:
print('Read file Error:' + str(error))
sys.exit()

text1_lines = readfile(textfile1)
text2_lines = readfile(textfile2)

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

./diff123.py nginx1.conf nginx2.conf > diff541854.html