Python如何就字符串加密反序输出

Question

输入一串文字，对其中字母进行加密a->b, b->c … z->a,大写不变最后反序输出

Answer 1

str = "zscABC"
str2 = str[::-1] #反序
str3 = ''
#小写字母通过ASCII往后加一位，z映射为a
for i in str2:
    j = ord(i)
    if 97 <= j < 122:
        j += 1
    elif j == 122:
        j = 97
    str3 += chr(j)
print(str3)