Python转译日文乱码（txt文件内容）

import sys from tkinter import messagebox for fp_n in sys.argv[1:]: if fp_n.find('.txt') != -1: txt = open(fp_n, 'r+') txt_r = txt.read() newtxt_r = txt_r.encode('gbk').decode('shift-jis') txt.close() txt = open(fp_n, 'w', encoding='utf-8') txt.write(str(newtxt_r)) txt.close() else: messagebox.showinfo(title='错误', message='该文件不是文本文件！')