python difflib模块 运维自动化

90jk

difflib模块主要用来对比文件内容差异

1.两个字符串的差异对比

import difflib

text1 = """text1:

This module provides classes and functions for comparing sequences.

including HTML and context and unifled diffs.

difflib documnet v7.4

add string

"""

text1_line = text1.splitlines()

text2 = """text2:

This module provides classes and functions for Comparing sequences.

including HTML and context and unified diffs.

difflib documnet v7.5"""

text2_line = text2.splitlines()

d = difflib.Differ()

diff = d.compare(text1_line,text2_line)

print '\n'.join(list(diff))

生成美观的对比HTML格式文件

d = difflib.HtmlDiff()

print d.make_file(text1_line,text2_line)

然后运行python test.py > diff.html

2.对比nginx配置文件差异

#!/usr/bin/env python

import difflib

import sys

try:

        textfile1 = sys.argv[1]

        textfile2 = sys.argv[2]

except Exception,e:

        print "Error:" + str(e)

        print "Usage: test.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:test.py filename1 filename2"

        sys.exit()

text1_lines = readfile(textfile1)

text2_lines = readfile(textfile2)