python批量替换多文件字符串问题详解

def doReplace(fpath,src,dst):
 newConent,bFlag = "",False
 with open(fpath,"rb") as fin:
 for line in fin :
  if line.find(src) == -1 :
  newLine = line
  else:
  bFlag = True
  newLine = line.replace(src,dst)
  newConent += newLine
 if not bFlag : return None
 print fpath
 with open(fpath,"wb") as fout:
 fout.write(newConent)
 return None

#! /usr/bin/python
#-*- coding: utf-8 -*- 

import os,sys

def doReplace(fpath,src,dst):
 newConent,bFlag = "",False
 with open(fpath,"rb") as fin:
 for line in fin :
  #if len(line.strip()) == 0 : continue
  if line.find(src) == -1 :
  newLine = line
  else:
  bFlag = True
  newLine = line.replace(src,dst)
  newConent += newLine
 if not bFlag : return None
 print fpath
 with open(fpath,"wb") as fout:
 fout.write(newConent)
 return None

def replaceMain(dirName,src,dst):
 for root, dirs, files in os.walk(dirName):
 for name in files:
  fpath = os.path.join(root, name)
  doReplace(fpath,src,dst)
 return None

if __name__ == "__main__":
 if len(sys.argv) < 3 :
 print "usage : replaceMulti srcStr dstStr"
 print "replace current dir files"
 sys.exit(1)
 srcStr = sys.argv[1]
 dstStr = sys.argv[2]
 dirName = "."
 dirName = os.path.realpath(dirName)
 print "working dir :",dirName
 replaceMain(dirName,srcStr,dstStr)

chmod a+x replaceMulti.py

./replaceMulti.py writeBuffer write_buffer

[root@local ~]# mv replaceMulti.py /usr/local/bin/
[root@local ~]# replaceMulti.py
usage : replaceMulti srcStr dstStr
replace current dir files
[root@local ~]#