对传入的字符串进行加密操作，规则是a变d，b变e…z变c，返回加密后的字符串。

Question

求解…应该是用程序控制结构完成的，不是用一些不常用的内部函数。

Answer 1

def caesar_encrypt(string):
    base = ord('a')
    encrypted_string = ''
    for ch in string:
        if ch != ' ':
            curr = ord(ch)
            diff = (curr - base + 3) % 26
            ch = chr(base + diff)
        encrypted_string += ch
    return encrypted_string


def main():
   
    print(caesar_encrypt('dinner is on me'))  # glqqhu lv rq ph


if __name__ == '__main__':
    main()