def main():     a = input("请输入字母:")     dic = {"abcABD":2, "defDEF":3,            "ghiGHI":4, "jklJKL":5,            "mnoMNO":6, "qprsQPRS":7,            "tuvTUV":8, "wxyzWXYZ":9}     for b in a:         for k,v in dic.items():             for c in k:                 if b in c:                     print(v, end="")     print("") if __name__ == '__main__':     while True:         main()
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