本文实例讲述了Python基于正则表达式实现文件内容替换的方法。分享给大家供大家参考,具体如下:
最近因为有一个项目需要从普通的服务器移植到SAE,而SAE的thinkphp文件结构和本地测试的有出入,需要把一些html和js的引用路径改成SAE的形式,为了不手工改,特地速成了一下Python的正则表达式和文件操作。主要要求是将某目录下的html和js里面的几个路径变量分别更改成相应的形式,匹配文件名的时候用了正则
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import os
import re
#all file in the directory
filelist = []
#function to traverse the directory
def recurseDir(path):
for i in os.listdir(path):
if os.path.isdir(path + '\\' + i):
recurseDir(path + '\\' + i)
else :
p = path + '\\' + i
print p
filelist.append(p)
#replace the file content
def replace(strFind, strReplace, lines, fileIO):
for s in lines:
if s.find(strFind) ! = - 1 :
foutput.write(s)
fileIO.write(s.replace(strFind, strReplace))
rootpath = os.path.abspath( '.' )
recurseDir(rootpath)
pattern1 = re. compile (r '.+html' )
pattern2 = re. compile (r '.+js' )
for fileName in filelist:
match1 = pattern1.match(fileName)
match2 = pattern2.match(fileName)
if match1 or match2:
lines = open (fileName).readlines()
fp = open (fileName + '.temp' , 'w' )
foutput = open ( "result.txt" , 'w' )
foutput.write(fileName)
if match1:
replace( '<include file="./Tpl/' , '<include file="./App/Tpl/' , lines, fp)
if match2:
replace( 'xxx/index.php' , 'index.php' , lines, fp)
fp.close()
#delete original file
if os.path.exists(fileName):
os.remove(fileName);
#rename the temp file
os.rename(fileName + '.temp' , fileName)
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希望本文所述对大家Python程序设计有所帮助。
原文链接:http://blog.csdn.net/u012862140/article/details/39011881