Data sources on new client

CHANGELOG.md

@@ -9,6 +9,11 @@ Write the date in place of the "Unreleased" in the case a new version is release
 
 - `docker-compose.yml` now uses the healthcheck endpoint `/healthz`
 
+### Fixed
+
+- Bug in Python client resulted in error when accessing data sources on a
+  just-created object.
+
 ## 2024-12-09
 
 ### Added

tiled/_tests/test_asset_access.py

@@ -33,7 +33,12 @@ def client(context):
 
 def test_include_data_sources_method_on_self(client):
     "Calling include_data_sources() fetches data sources on self."
-    client.write_array([1, 2, 3], key="x")
+    x = client.write_array([1, 2, 3], key="x")
+    # Fetch data_sources on x object directly.
+    with pytest.warns(UserWarning):
+        # This fetches the sources with an additional implicit request.
+        x.data_sources()
+    # Fetch data_sources on x object, looked up in client.
     with pytest.warns(UserWarning):
         # This fetches the sources with an additional implicit request.
         client["x"].data_sources()

tiled/client/base.py

@@ -273,6 +273,7 @@ def new_variation(
         self,
         structure_clients=UNCHANGED,
         include_data_sources=UNCHANGED,
+        structure=UNCHANGED,
         **kwargs,
     ):
         """
@@ -282,9 +283,12 @@ def new_variation(
             structure_clients = self.structure_clients
         if include_data_sources is UNCHANGED:
             include_data_sources = self._include_data_sources
+        if structure is UNCHANGED:
+            structure = self._structure
         return type(self)(
             self.context,
             item=self._item,
+            structure=structure,
             structure_clients=structure_clients,
             include_data_sources=include_data_sources,
             **kwargs,