python批量修改文件编码格式的方法

import os 
import sys 
import codecs 
import chardet 
 
def convert(filename,out_enc="UTF-8"): 
  try: 
    content=codecs.open(filename,'r').read() 
    source_encoding=chardet.detect(content)['encoding'] 
    print source_encoding 
 
    content=content.decode(source_encoding).encode(out_enc) 
    codecs.open(filename,'w').write(content) 
  except IOError as err: 
    print("I/O error:{0}".format(err)) 
 
def explore(dir): 
  for root,dirs,files in os.walk(dir): 
    for file in files: 
      if os.path.splitext(file)[1]=='.cpp': 
        print file 
        path=os.path.join(root,file) 
        convert(path) 
 
def main(): 
  explore(os.getcwd()) 
 
if __name__=="__main__": 
  main()