avoid tuplebindings to be empty

Author: rayokota

src/jsonata/jsonata.py

@@ -469,7 +469,7 @@ def evaluate_tuple_step(self, expr: parser.Parser.Symbol, input: Optional[Sequen
         result.tuple_stream = True
         step_env = environment
         if tuple_bindings is None:
-            tuple_bindings = [{"@": item} for item in input if item is not None]
+            tuple_bindings = [{"@": item} for item in input]
 
         for tuple_binding in tuple_bindings:
             step_env = self.create_frame_from_tuple(environment, tuple_binding)

tests/array_test.py

@@ -10,6 +10,11 @@ def test_wildcard(self):
         expr = jsonata.Jsonata("*")
         assert expr.evaluate([{"x": 1}]) == {"x": 1}
 
+    def test_index(self):
+        expr = jsonata.Jsonata("($x:=['a','b']; $x#$i.$i)")
+        assert expr.evaluate(1) == [0, 1]
+        assert expr.evaluate(None) == [0, 1]
+
     def test_wildcard_filter(self):
         value1 = {"value": {"Name": "Cell1", "Product": "Product1"}}
         value2 = {"value": {"Name": "Cell2", "Product": "Product2"}}