add keypair to transactkey

layercake/layercake/dynamodb.py

@@ -312,12 +312,14 @@ class TransactKey:
     pk: str
     pairs: tuple[KeyPair, ...] = ()
 
-    def __add__(self, other: SortKey) -> 'TransactKey':
+    def __add__(self, other: SortKey | KeyPair) -> 'TransactKey':
         if not isinstance(other, SortKey):
             raise TypeError('Can only add a SortKey to a TransactKey')
 
-        pair = KeyPair(self.pk, other)
+        if isinstance(other, SortKey):
-        return TransactKey(pk=self.pk, pairs=self.pairs + (pair,))
+            other = KeyPair(self.pk, other)
+
+        return TransactKey(pk=self.pk, pairs=self.pairs + (other,))
 
 
 class TransactionCanceledReason(TypedDict):
@@ -756,6 +758,7 @@ class DynamoDBCollection:
     """
     DynamoDBCollection provides a high-level abstraction for performing common
     CRUD operations and queries on a DynamoDB table.
+
     It leverages an underlying persistence layer to handle
     serialization and deserialization of data, key composition, transaction operations,
     and TTL management.

layercake/pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "layercake"
-version = "0.3.3"
+version = "0.3.4"
 description = "Packages shared dependencies to optimize deployment and ensure consistency across functions."
 readme = "README.md"
 authors = [

layercake/uv.lock

@@ -589,7 +589,7 @@ wheels = [
 
 [[package]]
 name = "layercake"
-version = "0.3.2"
+version = "0.3.3"
 source = { editable = "." }
 dependencies = [
     { name = "arnparse" },