switch edge direction

Author: matthiasdiener

pytools/debug.py

@@ -213,7 +213,7 @@ def hash_unhashable(obj: object) -> Union[object, Tuple[int, str]]:
         for r in refs:
             r = hash_unhashable(r)
             if r in res or outside_objects:
-                res.setdefault(r, []).append(obj)
+                res.setdefault(obj, []).append(r)
 
     return res
 

test/test_debug.py

@@ -59,9 +59,9 @@ def test_get_object_graph():
     c = (a, b)
     assert get_object_graph([a]) == {(1,): []}
     assert get_object_graph([a, b]) == {(1,): [], (2,): []}
-    assert get_object_graph([a, b, c]) == {((1,), (2,)): [],      # c: []
-                                           (1,): [((1,), (2,))],  # a: [c]
-                                           (2,): [((1,), (2,))]}  # b: [c]
+    assert get_object_graph([a, b, c]) == {((1,), (2,)): [(2,), (1,)],  # c: [a, b]
+                                           (1,): [],  # a: []
+                                           (2,): []}  # b: []
 
     a = {}
     b = {"a": a}