Fix ws IndexValue parse (#428)

Author: justinpolygon

polygon/websocket/models/__init__.py

@@ -26,6 +26,8 @@ def parse_single(data: Dict[str, Any]):
         return LimitUpLimitDown.from_dict(data)
     elif event_type == EventType.CryptoL2.value:
         return Level2Book.from_dict(data)
+    elif event_type == EventType.Value.value:
+        return IndexValue.from_dict(data)
     return None
 
 

polygon/websocket/models/models.py

@@ -317,10 +317,12 @@ class IndexValue:
 
     @staticmethod
     def from_dict(d):
-        d.get("ev", None),
-        d.get("val", None),
-        d.get("T", None),
-        d.get("t", None)
+        return IndexValue(
+            d.get("ev", None),
+            d.get("val", None),
+            d.get("T", None),
+            d.get("t", None),
+        )
 
 
 WebSocketMessage = NewType(