python批量按顺序重命名文件名（适用于png，jpg，xml，json,txt，gt等各形式的文件）

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

import os

class BatchRename():

def __init__(self):
self.path = 'D:/txt'   #文件路径

def rename(self):
filelist = os.listdir(self.path)
filelist.sort()
total_num = len(filelist)
i = 1
for item in filelist:
if item.endswith('.txt'):
src = os.path.join(os.path.abspath(self.path), item)
s = str(i)
s = s.zfill(4)    # 0001.txt   0002.txt  0003.txt...
dst = os.path.join(os.path.abspath(self.path), s + '.txt')

try:
os.rename(src, dst)
print ('converting %s to %s ...' % (src, dst))
i = i + 1
except:
continue
print ('total %d to rename & converted %d files' % (total_num, i))

if __name__ == '__main__':
demo = BatchRename()
demo.rename()