出现非英文字符时出错

Question

当用户插入非英文字符时，脚本会因错误而停止。

# -*- coding: utf-8 -*-
from Tkinter import *
wnd = Tk()
name_A = Entry(wnd)
name_A.pack()
def AAAA1():
     A1 = name_A.get()
     with open("file_name.TXT", 'w') as f:
        f.write(A1)
Button(wnd, text="GO", command=AAAA1).pack()
wnd.mainloop()

UnicodeDecodeError：'ascii'编解码器无法解码位置0中的字节0xd7：序数不在范围内（128