python使用difflib对比文件示例
#!/usr/bin/env python# -*- coding: utf-8 -*-
import os
import sys
import difflib
try:
tfile1=sys.argv
tfile2=sys.argv
except Exception,e:
print "错误："+str(e)
print "请准确输入参数，例如：python diff.py file1 file2"
sys.exit()
def readfile(filename):
try:
fileHandle=open(filename,'rb')
lines=fileHandle.read().splitlines()
fileHandle.close()
return lines
except IOError as error:
print('读取文件错误：'+str(error))
sys.exit()
if tfile1=="" or tfile2=="":
print "请准确输入参数，例如：python diff.py file1 file2"
sys.exit()
tfile1_lines=readfile(tfile1)
tfile2_lines=readfile(tfile2)
#d=difflib.HtmlDiff()
#print s.make_file(tfile1_lines,tfile2_lines)
#为了生成html能识别中文，可用下面代码 #修改diff.html的编码，将ISO-8859-1改为UTF-8
#====================================
#方法1：
#d=difflib.HtmlDiff()
#q=d.make_file(tfile1_lines,tfile2_lines)
#old_str='charset=ISO-8859-1'
#new_str='charset=UTF-8'
#data=q.replace(old_str,new_str)
#fo=open('diff.html','w')
#fo.write(data)
#fo.close()
#====================================
#方法2：
#d=difflib.HtmlDiff()
#q=d.make_file(tfile1_lines,tfile2_lines)
#old_str='charset=ISO-8859-1'
#new_str='charset=UTF-8'
#fo=open('diff.html','w')
#fo.write(q)
#fo.close()
#with open('diff.html','r') as f:
# lines=f.readlines()
#with open('diff.html','w') as f_new:
# for line in lines:
# f_new.write(line.replace(old_str,new_str))
#=====================================
#方法3：
old_str='charset=ISO-8859-1'
new_str='charset=UTF-8'
d=difflib.HtmlDiff()
q=d.make_file(tfile1_lines,tfile2_lines)
with open('diff.html','w') as f_new:
f_new.write(q.replace(old_str,new_str))
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