s3.py 文件源码

def _make_s3_transfer(self, method_name, config=None, *args, **kwargs):
        """
        Creates a boto3 ``S3Transfer`` object for doing multipart uploads
        and downloads and executes the given method.
        """
        transfer = _get_s3_transfer(config=config)
        method = getattr(transfer, method_name)
        try:
            return method(*args, **kwargs)
        except boto3_exceptions.S3UploadFailedError as e:
            six.raise_from(exceptions.FailedUploadError(str(e), e), e)
        except boto3_exceptions.RetriesExceededError as e:
            six.raise_from(exceptions.FailedDownloadError(str(e), e), e)