# -*- coding: utf-8 -*-
"""
Created on Sat Jun 13 09:16:58 2020

@author: HARRY LIU
"""
a={}
while True:
    key=input
    if key==0:
        print(d)
        break
    else:
        if a not in d.pop:
            value=input("請輸入翻譯")
            d["a"]=180
        else:
        print("此字已經在字典中,請輸入其他的字")
        

