js/src/tests/client.int.test.ts

@@ -171,6 +171,12 @@ test.concurrent("Test LangSmith Client Dataset CRD", async () => {
     client.listExamples({ datasetId: newDataset.id })
   );
   expect(examples2.length).toBe(2);
+  await client.createExample({ dataset_id: newDataset.id, inputs: {} });
+
+  const examples3 = await toArray(
+    client.listExamples({ datasetId: newDataset.id })
+  );
+  expect(examples3.length).toBe(3);
 
   await client.deleteDataset({ datasetId });
   const rawDataset = await client.createDataset(fileName, {

python/langsmith/client.py

@@ -4085,34 +4085,32 @@ def _prepare_multipart_data(
                 )
             )
 
-            if example.inputs:
-                inputsb = _dumps_json(example.inputs)
+            inputsb = _dumps_json(example.inputs or {})
 
-                parts.append(
+            parts.append(
+                (
+                    f"{example_id}.inputs",
                     (
-                        f"{example_id}.inputs",
-                        (
-                            None,
-                            inputsb,
-                            "application/json",
-                            {},
-                        ),
-                    )
+                        None,
+                        inputsb,
+                        "application/json",
+                        {},
+                    ),
                 )
+            )
 
-            if example.outputs:
-                outputsb = _dumps_json(example.outputs)
-                parts.append(
+            outputsb = _dumps_json(example.outputs or {})
+            parts.append(
+                (
+                    f"{example_id}.outputs",
                     (
-                        f"{example_id}.outputs",
-                        (
-                            None,
-                            outputsb,
-                            "application/json",
-                            {},
-                        ),
-                    )
+                        None,
+                        outputsb,
+                        "application/json",
+                        {},
+                    ),
                 )
+            )
 
             if example.attachments:
                 for name, attachment in example.attachments.items():

python/langsmith/testing/_internal.py

@@ -572,6 +572,7 @@ def sync_example(
         pytest_plugin=None,
         pytest_nodeid=None,
     ) -> None:
+        inputs = inputs or {}
         if pytest_plugin and pytest_nodeid:
             update = {"inputs": inputs, "reference_outputs": outputs}
             update = {k: v for k, v in update.items() if v is not None}
@@ -592,7 +593,7 @@ def sync_example(
             )
         else:
             if (
-                (inputs is not None and inputs != example.inputs)
+                (inputs != example.inputs)
                 or (outputs is not None and outputs != example.outputs)
                 or (metadata is not None and metadata != example.metadata)
                 or str(example.dataset_id) != str(self.id)

python/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langsmith"
-version = "0.3.21"
+version = "0.3.22"
 description = "Client library to connect to the LangSmith LLM Tracing and Evaluation Platform."
 authors = ["LangChain <support@langchain.dev>"]
 license = "MIT"

python/tests/integration_tests/test_client.py

@@ -177,6 +177,16 @@ def test_datasets(langchain_client: Client) -> None:
         langchain_client.list_examples(dataset_id=new_dataset.id)  # type: ignore
     )
     assert len(examples2) == 2
+    langchain_client.create_example(
+        inputs={},
+        outputs=None,
+        dataset_id=new_dataset.id,
+    )
+    examples3 = list(
+        langchain_client.list_examples(dataset_id=new_dataset.id)  # type: ignore
+    )
+    assert len(examples3) == 3
+    assert any(example.inputs == {} and example.outputs == {} for example in examples3)
     langchain_client.delete_dataset(dataset_id=dataset_id)