Missing code annotations

Author: alwx

examples/formbot/actions.py

@@ -29,7 +29,9 @@ def slot_mappings(self) -> Dict[Text, Union[Dict, List[Dict]]]:
         return {
             "cuisine": self.from_entity(entity="cuisine", not_intent="chitchat"),
             "num_people": [
-                self.from_entity(entity="number", intent=["inform", "request_restaurant"]),
+                self.from_entity(
+                    entity="number", intent=["inform", "request_restaurant"]
+                ),
             ],
             "outdoor_seating": [
                 self.from_entity(entity="seating"),

rasa/nlu/training_data/training_data.py

@@ -75,7 +75,7 @@ def merge(self, *others: "TrainingData") -> "TrainingData":
             nlg_stories,
         )
 
-    def filter_training_examples(self, condition: Callable[[Message], bool]):
+    def filter_training_examples(self, condition: Callable[[Message], bool]) -> "TrainingData":
         """Filter training examples.
 
         Args:
@@ -94,15 +94,15 @@ def filter_training_examples(self, condition: Callable[[Message], bool]):
             self.lookup_tables,
         )
 
-    def filter_by_intent(self, intent: Text):
+    def filter_by_intent(self, intent: Text) -> "TrainingData":
         """Filter training examples."""
         raise_warning(
             "The `filter_by_intent` function is deprecated. "
             "Please use `filter_training_examples` instead.",
             DeprecationWarning,
             stacklevel=2,
         )
-        self.filter_training_examples(
+        return self.filter_training_examples(
             lambda ex: intent == ex.get("intent")
         )