aioboto3 12.3.0 - ValueError: too many values to unpack (expected 2)

[chandra-goka]

• Async AWS SDK for Python version: aioboto3 12.3.0
• Python version: 3.8
• Operating System: Mac

Description

Existing test cases were failing due to ValueError: too many values to unpack (expected 2) after upgrading the aioboto3 version from 12.1.0 to 12.3.0. I upgraded this because there is a known vulnerability in aiobotocore 2.8.0

class TestCheckModel(Model):
    class Meta:
        table_name = os.environ.get(“TEST_TABLE")
        region = constants.REGION
        billing_mode = constants.BILLING_MODE

    document_name = UnicodeAttribute(hash_key=True)

    created_by = UnicodeAttribute()
    created_at = UnicodeAttribute(default=datetime.utcnow().isoformat())

Test case :

@pytest.fixture(scope="session")
def create_checks_table(start_dynamo_local: int):

    if not TestCheckModel.exists():
        TestCheckModel.create_table(wait=True)

What I Did

Updated the aioboto3 version from 12.1.0 to 12.3.0.

pytest -x --cov=src/

Error:

@pytest.fixture(scope="session")
def create_checks_table(start_dynamo_local: int):

>    if not TestCheckModel.exists():
        TestCheckModel.create_table(wait=True)

Stacktrace:

.venv/lib/python3.8/site-packages/pynamodb/models.py:775: in exists
    cls._get_connection().describe_table()
.venv/lib/python3.8/site-packages/pynamodb/connection/table.py:293: in describe_table
    return self.connection.describe_table(self.table_name)
.venv/lib/python3.8/site-packages/pynamodb/connection/base.py:802: in describe_table
    data = self.dispatch(DESCRIBE_TABLE, operation_kwargs)
.venv/lib/python3.8/site-packages/pynamodb/connection/base.py:347: in dispatch
    data = self._make_api_call(operation_name, operation_kwargs, settings)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = Connection<http://localhost:10764>, operation_name = 'DescribeTable', operation_kwargs = {'TableName': 'test.platform-services.agent-healthchecks'}
settings = <pynamodb.settings.OperationSettings object at 0x10d1c46d0>

    def _make_api_call(self, operation_name: str, operation_kwargs: Dict, settings: OperationSettings = OperationSettings.default) -> Dict:
        """
        This private method is here for two reasons:
        1. It's faster to avoid using botocore's response parsing
        2. It provides a place to monkey patch HTTP requests for unit testing
        """
        operation_model = self.client._service_model.operation_model(operation_name)
        if self._convert_to_request_dict__endpoint_url:
            request_context = {
                'client_region': self.region,
                'client_config': self.client.meta.config,
                'has_streaming_input': operation_model.has_streaming_input,
                'auth_type': operation_model.auth_type,
            }
>           endpoint_url, additional_headers = self.client._resolve_endpoint_ruleset(
                operation_model, operation_kwargs, request_context
            )
E           ValueError: too many values to unpack (expected 2)

.venv/lib/python3.8/site-packages/pynamodb/connection/base.py:383: ValueError

[terricain]

site-packages/pynamodb/connection/base.py Pynamodb is not aioboto3, what specific error do you have with aioboto3?