python实现凯撒加解密并输出所有结果

def decrypt(cipher_text, key):
    plain_text = ""
    for char in cipher_text:
        if char.isalpha():
            if char.isupper():
                plain_text += chr((ord(char) - 65 - key) % 26 + 65)  # 大写字母解密
            else:
                plain_text += chr((ord(char) - 97 - key) % 26 + 97)  # 小写字母解密
        elif char.isdigit():
            plain_text += chr((ord(char) - 48 - key) % 10 + 48)  # 数字解密
        else:
            plain_text += char  # 特殊字符保持不变
    return plain_text


cipher_text = input("请输入明文或密文：")
for key in range(1, 26):
    print("密钥为：", key)
    plain_text = decrypt(cipher_text, key)
    print("解密为：", plain_text)