ascii文件转为utf-8格式

import codecs
import os
　　　　 #格式转换
	fhanzi1 = codecs.open(os.path.join(outputpath,"hanzi1.txt"),"r")
	fhanzi = codecs.open(os.path.join(outputpath,"hanzi.txt"),"w")
	
	result_f = codecs.EncodedFile(fhanzi1,'utf-8','gbk')
	
	for chars in result_f:
		fhanzi.write(chars)
	
	fhanzi1.close()
	fhanzi.close()
	
	os.remove(os.path.join(outputpath,"hanzi1.txt"))