凯撒密码python编程加密(凯撒密码Python实现)

#第一版
text=input("请输入文本：")
for i in text:
    if 'a'<=i<='z':
        print(chr(ord('a')+(ord(i)-ord("a")+3)%26),end='')
    elif 'A'<=i<='Z':
        print(chr(ord('A') + (ord(i) - ord("A") + 3) % 26), end='')
    else:
        print(i,end='')

#######升级版，包括中文
text=input("请输入文本：")
for i in text:
    if 'a'<=i<='z':
        print(chr(ord('a')+(ord(i)-ord("a")+3)%26),end='')
    elif 'A'<=i<='Z':
        print(chr(ord('A') + (ord(i) - ord("A") + 3) % 26), end='')
    elif 0x4E00<=ord(i)<=0x9FA5:
        print(chr(ord(i)+3),end='')

    else:
        print(i,end='')