fix: address ruff format, ruff check, and mypy CI failures

- Apply ruff formatting to all changed files
- Remove unused DynamoDBTable import from test file
- Add DynamoDBAttribute to __init__.pyi stub for mypy resolution

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: suseriAtlan

pyatlan/model/assets/__init__.pyi

@@ -422,6 +422,7 @@ __all__ = [
     "AzureEventHubConsumerGroup",
     "DynamoDBLocalSecondaryIndex",
     "DynamoDBGlobalSecondaryIndex",
+    "DynamoDBAttribute",
     "IndistinctAsset",
 ]
 
@@ -688,6 +689,7 @@ from .dremio_source import DremioSource
 from .dremio_space import DremioSpace
 from .dremio_virtual_dataset import DremioVirtualDataset
 from .dynamo_d_b import DynamoDB
+from .dynamo_d_b_attribute import DynamoDBAttribute
 from .dynamo_d_b_global_secondary_index import DynamoDBGlobalSecondaryIndex
 from .dynamo_d_b_local_secondary_index import DynamoDBLocalSecondaryIndex
 from .dynamo_dbtable import DynamoDBTable

pyatlan/model/assets/dynamo_d_b_attribute.py

@@ -135,7 +135,9 @@ def dynamo_d_b_status(self, dynamo_d_b_status: Optional[DynamoDBStatus]):
     @property
     def dynamo_d_b_partition_key(self) -> Optional[str]:
         return (
-            None if self.attributes is None else self.attributes.dynamo_d_b_partition_key
+            None
+            if self.attributes is None
+            else self.attributes.dynamo_d_b_partition_key
         )
 
     @dynamo_d_b_partition_key.setter
@@ -224,9 +226,7 @@ class Attributes(Column.Attributes):
         dynamo_d_b_write_capacity_units: Optional[int] = Field(
             default=None, description=""
         )
-        no_s_q_l_schema_definition: Optional[str] = Field(
-            default=None, description=""
-        )
+        no_s_q_l_schema_definition: Optional[str] = Field(default=None, description="")
         dynamo_dbtable: Optional[DynamoDBTable] = Field(
             default=None, description=""
         )  # relationship

pyatlan/model/assets/dynamo_dbtable.py

@@ -1077,11 +1077,7 @@ def dynamo_d_b_global_secondary_indexes(
     def dynamo_d_b_columns(
         self,
     ) -> Optional[List[DynamoDBAttribute]]:
-        return (
-            None
-            if self.attributes is None
-            else self.attributes.dynamo_d_b_columns
-        )
+        return None if self.attributes is None else self.attributes.dynamo_d_b_columns
 
     @dynamo_d_b_columns.setter
     def dynamo_d_b_columns(

tests/unit/model/dynamo_db_attribute_test.py

@@ -1,6 +1,6 @@
 import pytest
 
-from pyatlan.model.assets import DynamoDBAttribute, DynamoDBTable
+from pyatlan.model.assets import DynamoDBAttribute
 
 DYNAMODB_CONNECTOR_TYPE = "dynamodb"
 DYNAMODB_CONNECTION_QUALIFIED_NAME = "default/dynamodb/1709471234"
@@ -19,7 +19,12 @@
     [
         (None, DYNAMODB_TABLE_QUALIFIED_NAME, 1, "name is required"),
         (DYNAMODB_ATTRIBUTE_NAME, None, 1, "parent_qualified_name is required"),
-        (DYNAMODB_ATTRIBUTE_NAME, DYNAMODB_TABLE_QUALIFIED_NAME, None, "order is required"),
+        (
+            DYNAMODB_ATTRIBUTE_NAME,
+            DYNAMODB_TABLE_QUALIFIED_NAME,
+            None,
+            "order is required",
+        ),
         (
             DYNAMODB_ATTRIBUTE_NAME,
             DYNAMODB_CONNECTION_QUALIFIED_NAME,