update

unitary/alpha/quantum_world.py

@@ -498,9 +498,10 @@ def get_correlated_histogram(
             count:      Number of measurements
 
         Returns:
-            A dictionary, with the keys being each possible state of the whole quantum
-            world (or `objects` if specified) in terms of tuple, and the values being
-            the count of that state.
+            A dictionary, with the keys being tuples representing each possible state of
+            the whole quantum world (or, if `objects` is specified, the key is a tuple of
+            the results of each object in `objects` and in the order of `objects`), and
+            the values being the count of that state.
         """
         if not objects:
             objects = self.public_objects

unitary/alpha/quantum_world_test.py

@@ -773,7 +773,5 @@ def test_get_correlated_histogram_with_entangled_qobjects(simulator, compile_to_
     alpha.Split()(light1, light2, light3)
     alpha.quantum_if(light2).equals(1).apply(alpha.Move())(light4, light5)
 
-    # histogram = world.get_histogram()
-    # assert histogram == [{0: 0, 1: 100}, {0: 0, 1: 100, 2: 0}]
     histogram = world.get_correlated_histogram()
-    assert histogram.keys() == [(0, 0, 1, 1, 0), (0, 1, 0, 0, 1)]
+    assert histogram.keys() == {(0, 0, 1, 1, 0), (0, 1, 0, 0, 1)}