如何设置setter和getter来通过测试用例。Ceasar密码类型问题

class CeasarCipher:
    def __init__(self):
        self._password = ''

    def set_password(self, password):
        # 在setter中对密码进行加密操作
        encrypted_password = self._encrypt(password)
        self._password = encrypted_password

    def get_password(self):
        # 在getter中对密码进行解密操作
        decrypted_password = self._decrypt(self._password)
        return decrypted_password

    def _encrypt(self, password):
        # 实现密码加密逻辑
        encrypted_password = ''
        # 加密算法代码
        return encrypted_password

    def _decrypt(self, encrypted_password):
        # 实现密码解密逻辑
        decrypted_password = ''
        # 解密算法代码
        return decrypted_password

cipher = CeasarCipher()
password = 'mysecretpassword'

cipher.set_password(password)
encrypted_password = cipher.get_password()

print(encrypted_password)  # 输出加密后的密码

decrypted_password = cipher._decrypt(encrypted_password)
print(decrypted_password)  # 输出解密后的密码