Jupyter notebook 字符串替换

比如随机输入一个字符串，比如zdfgh ，输出的是bfhij ，请问怎么弄呢

    # 分开打印
    s = input('请输入字符串:')
    for c in s:
        if ord(c) >= 122:
            print(chr(ord(c) - 26 + 2))
        else:
            print(chr(ord(c) + 2))
  

    #一起打印
    s = input('请输入字符串:')
    s_new = ''
    for c in s:
        if ord(c) >= 122:
            s_new = s_new + chr(ord(c) - 26 + 2)
        else:
            s_new = s_new + chr(ord(c) + 2)
    print(s_new)