python解决js文件utf-8编码乱码问题

# -*- coding:utf-8 -*- 
import os,sys 
import chardet 
def convert( filename, in_enc = "GBK", out_enc="UTF-8" ): 
 try: 
 print("convert " + filename) 
 f = open(filename,'rb') 
 content = f.read() 
 result = chardet.detect(content)#通过chardet.detect获取当前文件的编码格式串，返回类型为字典类型 
 print(result) 
 f.close() 
 coding = result.get('encoding')#获取encoding的值[编码格式] 
 if coding != 'UTF-8-SIG' and coding == 'utf-8':#文件格式如果是utf-8的时候，才进行转码 
 print(coding + " to "+ out_enc +"!") 
 new_content = content.decode(in_enc).encode(out_enc) 
 f = open(filename, 'wb') 
 f.write(new_content) 
 f.close() 
 print(" done") 
 else: 
 print(coding) 
 except IOError as e: 
 # except: 
 print(e) 
def explore(dir): 
 for root, dirs, files in os.walk(dir): 
 for file in files: 
 path = os.path.join(root, file) 
 convert(path) 
def main(dir): 
 if(os.path.isdir(dir)): 
 fpaths = [fpath for fpath in os.listdir(dir) if os.path.isfile(dir+"\"+fpath) and fpath.endswith('.js')] 
 dpaths = [dpath for dpath in os.listdir(dir) if os.path.isdir(dir+"\"+dpath)] 
 for f in fpaths: 
 convert(dir+"\"+f,'utf-8','UTF-8-SIG') 
 for d in dpaths: 
 print(d) 
 main(dir+"\"+d) 
if __name__ == "__main__": 
 main('目录')