题解 | #简单密码#

# 获取输入

code = input()

# 创建九宫格键盘对应字典
d = {"abc":2,"def":3,"ghi":4,"jkl":5,"mno":6,"pqrs":7,"tuv":8, "wxyz":9}

# 遍历输入，进行字母大小判断，若为数字就原样输出
for i in code:
    if i.isupper(): # 判断大写
        #这里特殊一点，如果是Z，就返回a.如果非Z，就变小写，然后利用ASCII码值往后移一位
        if i == "Z":
            print("a", end = "")
        else:
            print(chr(ord(i.lower())+1), end = "")
    elif i.islower(): # 判断小写，遍历字典
        for key in d.keys():
            if i in key:
               print(d[key], end = "")
    else:
        print(i, end = "")