sessions.py 文件源码

def __init__(self, session, key_prefix, table_name, aws_access_key_id=None,
                 aws_secret_access_key=None, region=None, endpoint_url=None, use_signer=False, permanent=True):
        if session is None:
            import boto3
            session = boto3.Session(aws_access_key_id=aws_access_key_id, aws_secret_access_key=aws_secret_access_key,
                                    region_name=region)
        self.client = session.client('dynamodb', endpoint_url=endpoint_url)
        self.key_prefix = key_prefix
        self.use_signer = use_signer
        self.permanent = permanent

        if table_name not in self.client.list_tables().get(u'TableNames'):
            raise RuntimeError("The table {0!s} does not exist in DynamoDB for the requested region of {1!s}. Please "
                               "ensure that the table has a PrimaryKey of \"SessionID\"".format(
                                table_name,
                                session.region_name
                                ))

        self.table_name = table_name