django接入支付宝支付抛异常request sign failed. int() argument must be a string, a bytes-like object or a real number, not 'Sequence'

在django项目中接入支付宝支付，使用alipay-sdk-python模块， 所有参数按官方文档设置好并调用，抛如下异常：

Traceback (most recent call last): File "D:\pyvenv\orderingshop\lib\site-packages\alipay\aop\api\DefaultAlipayClient.py", line 127, in __prepare_request_params sign = sign_with_rsa2(self.__config.app_private_key, sign_content, self.__config.charset) File "D:\pyvenv\orderingshop\lib\site-packages\alipay\aop\api\util\SignatureUtils.py", line 49, in sign_with_rsa2 signature = rsa.sign(sign_content, rsa.PrivateKey.load_pkcs1(private_key, format='PEM'), 'SHA-256') File "D:\pyvenv\orderingshop\lib\site-packages\rsa\key.py", line 125, in load_pkcs1 return method(keyfile) File "D:\pyvenv\orderingshop\lib\site-packages\rsa\key.py", line 613, in _load_pkcs1_pem return cls._load_pkcs1_der(der) File "D:\pyvenv\orderingshop\lib\site-packages\rsa\key.py", line 548, in _load_pkcs1_der key = cls(as_ints) TypeError: int() argument must be a string, a bytes-like object or a real number, not 'Sequence' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "D:\pyvenv\orderingshop\lib\site-packages\django\core\handlers\exception.py", line 55, in inner response = get_response(request) File "D:\pyvenv\orderingshop\lib\site-packages\django\core\handlers\base.py", line 197, in _get_response response = wrapped_callback(request, callback_args, callback_kwargs) File "D:\pyvenv\orderingshop\lib\site-packages\django\views\decorators\csrf.py", line 56, in wrapper_view return view_func(*args, kwargs) File "D:\pyvenv\orderingshop\lib\site-packages\django\views\generic\base.py", line 104, in view return self.dispatch(request, args, kwargs) File "D:\pyvenv\orderingshop\lib\site-packages\rest_framework\views.py", line 509, in dispatch response = self.handle_exception(exc) File "D:\pyvenv\orderingshop\lib\site-packages\rest_framework\views.py", line 469, in handle_exception self.raise_uncaught_exception(exc) File "D:\pyvenv\orderingshop\lib\site-packages\rest_framework\views.py", line 480, in raise_uncaught_exception raise exc File "D:\pyvenv\orderingshop\lib\site-packages\rest_framework\views.py", line 506, in dispatch response = handler(request, args, **kwargs) File "D:\codes\zzc\orderingshop\pay\views.py", line 74, in post response = self.get_alipay_client().page_execute(request) File "D:\pyvenv\orderingshop\lib\site-packages\alipay\aop\api\DefaultAlipayClient.py", line 322, in page_execute query_string, params = self.__prepare_request(request) File "D:\pyvenv\orderingshop\lib\site-packages\alipay\aop\api\DefaultAlipayClient.py", line 89, in __prepare_request common_params, params = self.__prepare_request_params(request) File "D:\pyvenv\orderingshop\lib\site-packages\alipay\aop\api\DefaultAlipayClient.py", line 131, in __prepare_request_params raise RequestException('[' + THREAD_LOCAL.uuid + ']request sign failed. ' + str(e)) alipay.aop.api.exception.Exception.RequestException: [d6c2b210-50c3-11ef-90c5-005056c00008]request sign failed. int() argument must be a string, a bytes-like object or a real number, not 'Sequence'

抛异常原因：

使用支付宝官方开放平台密钥工具V2.0.3生成的应用私钥格式不正确；

解决方法：

需要用该工具再转换一次。