Fix interpretation events (#2993)

* Fix interpretation + test

* Changelog

* Empty

* Fix test

* Handle None case

Co-authored-by: Abubakar Abid <abubakar@huggingface.co>

* lint

Co-authored-by: Abubakar Abid <abubakar@huggingface.co>

CHANGELOG.md

@@ -4,6 +4,7 @@
 No changes to highlight.
 
 ## Bug Fixes:
+* Fixes bug where interpretation event was not configured correctly by [@freddyaboulton](https://github.com/freddyaboulton) in [PR 2993](https://github.com/gradio-app/gradio/pull/2993) 
 * Fix relative import bug in reload mode by [@freddyaboulton](https://github.com/freddyaboulton) in [PR 2992](https://github.com/gradio-app/gradio/pull/2992) 
 
 ## Documentation Changes:

gradio/interface.py

@@ -706,8 +706,7 @@ class Interface(Blocks):
             interpretation_btn.click(
                 self.interpret_func,
                 inputs=self.input_components + self.output_components,
-                outputs=interpretation_set
-                or [] + [input_component_column, interpret_component_column],  # type: ignore
+                outputs=(interpretation_set or []) + [input_component_column, interpret_component_column],  # type: ignore
                 preprocess=False,
             )
 

test/test_interfaces.py

@@ -238,6 +238,34 @@ class TestInterfaceInterpretation:
             interpretation="default",
         )
 
+        interpretation_id = None
+        for c in iface.config["components"]:
+            if c["props"].get("value") == "Interpret" and c.get("type") == "button":
+                interpretation_id = c["id"]
+
+        # Make sure the event is configured correctly.
+        interpretation_dep = next(
+            d
+            for d in iface.config["dependencies"]
+            if d["targets"] == [interpretation_id]
+        )
+        interpretation_comps = [
+            c["id"]
+            for c in iface.config["components"]
+            if c.get("type") == "interpretation"
+        ]
+        interpretation_columns = [
+            c["id"]
+            for c in iface.config["components"]
+            if c.get("type") == "column" and c["props"].get("variant") == "default"
+        ]
+        assert sorted(interpretation_dep["outputs"]) == sorted(
+            interpretation_comps + interpretation_columns
+        )
+        assert sorted(interpretation_dep["inputs"]) == sorted(
+            [c._id for c in iface.input_components + iface.output_components]
+        )
+
         app, _, _ = iface.launch(prevent_thread_lock=True)
         client = TestClient(app)