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python批量替换文件中的字符,python直接替换文件某行字段

时间:2023-05-06 10:36:10 阅读:283354 作者:4957

指定文件夹,指定文件类型,替换该文件夹下全部文件的内容。

注意在window下的读写内容需要指定编码,还需要在文件头指定#coding:utf-8 编码,避免出现编码问题。

#coding:utf-8

import os

import os.path

path='.'

oldStr='.php'

newStr='.html'

for (dirpath, dirnames, filenames) in os.walk(path):

for file in filenames:

if os.path.splitext(file)[1]=='.html':

print(file)

filepath=os.path.join(dirpath,file)

try:

text_file = open(filepath, 'r')

lines = text_file.readlines()

text_file.close()

output  = open(filepath,'w',encoding= 'utf-8')

for line in lines:

#print(line)

if not line:

break

if(oldStr in line):

tmp = line.split(oldStr)

temp = tmp[0] + newStr + tmp[1]

output.write(temp)

else:

output.write(line)

output.close()

except Exception:

print(Exception)

break

这个示例可以批量替换文件名和内容

#!/usr/bin/env python

# -*- coding: utf-8 -*-

import os, re

def multi_replace(text, adict):

rx = re.compile('|'.join(map(re.escape, adict)))

def xlat(match):

return adict[match.group(0)]

return rx.sub(xlat, text)

def batrename(curdir, pairs):

for fn in os.listdir(curdir):

newfn = multi_replace(fn, pairs)

if newfn != fn:

print('Renames %s to %s in %s.' % (fn, newfn, curdir))

os.rename(os.path.join(curdir, fn), os.path.join(curdir, newfn))

file = os.path.join(curdir, newfn)

if os.path.isdir(file):

batrename(file, pairs)

continue

text = open(file).read()

newtext = multi_replace(text, pairs)

if newtext != text:

print('Renames %s.' % (file,))

open(file, 'w').write(newtext)

if __name__=='__main__':

while True:

oldname = raw_input('Old name: ')

newname = raw_input('New name: ')

if oldname and newname:

batrename(os.path.abspath('.'), {oldname:newname})

else: break

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