AES 解密 之后转为 bytes类型

怎么才能让AES 解密后的内容变 bytes 类型 并且是 单斜杠

from Cryptodome.Cipher import AES
import  base64

BLOCK_SIZE = 16  # Bytes
pad = lambda s: s + (BLOCK_SIZE - len(s) % BLOCK_SIZE) * \
                chr(BLOCK_SIZE - len(s) % BLOCK_SIZE)
unpad = lambda s: s[:-ord(s[len(s) - 1:])]

def aesDecrypt(key, data):
    '''

    :param key: 密钥
    :param data: 加密后的数据（密文）
    :return:明文
    '''
    key = key.encode('utf8')
    data = base64.b64decode(data)
    cipher = AES.new(key, AES.MODE_ECB)

    # 去补位
    text_decrypted = unpad(cipher.decrypt(data))
    text_decrypted = text_decrypted.decode('utf8')
    return text_decrypted

if __name__ == '__main__':
    data = "ZTGKHEpEDu4SErowHwkeANiyFmUZgNvlrodx3RZPr1c="
    key = "5c44c819appsapi0"

    exp = aesDecrypt(key,data)

    print("正常解密str类型：",type(exp))
    print(exp)
    print('------------------------------')
    expByts = str.encode(exp)
    print("变bytes类型：",type(expByts))
    print(expByts)

结果

正常解密str类型： <class 'str'>
\x4d\x5a\x41\x52\x55\x48\x89
------------------------------
变bytes类型： <class 'bytes'>
b'\\x4d\\x5a\\x41\\x52\\x55\\x48\\x89'