diff --git a/studio/backend/core/inference/tools.py b/studio/backend/core/inference/tools.py
index 9d4322aad9..689c4cc85a 100644
--- a/studio/backend/core/inference/tools.py
+++ b/studio/backend/core/inference/tools.py
@@ -442,9 +442,9 @@ def _path_value_is_unsafe(value: str, assignments = None) -> bool:
             var = re.split(r"[/}]", inner, maxsplit = 1)[0]
             if _path_var_resolves_unsafe(var, assignments):
                 return True
-            if _path_var_is_unknown_external(var, assignments) and _path_entry_empty_expansion_unsafe(
-                e, var
-            ):
+            if _path_var_is_unknown_external(
+                var, assignments
+            ) and _path_entry_empty_expansion_unsafe(e, var):
                 return True
             continue
         if e.startswith("$"):
@@ -3654,7 +3654,12 @@ class _ConstEnv(dict):
 
     __slots__ = ("shadowed",)
 
-    def __init__(self, *a, shadowed = None, **k):
+    def __init__(
+        self,
+        *a,
+        shadowed = None,
+        **k,
+    ):
         super().__init__(*a, **k)
         self.shadowed = shadowed or frozenset()
 
diff --git a/studio/backend/tests/test_sandbox_tools.py b/studio/backend/tests/test_sandbox_tools.py
index 45f03bab17..6481ac4b3d 100644
--- a/studio/backend/tests/test_sandbox_tools.py
+++ b/studio/backend/tests/test_sandbox_tools.py
@@ -4992,8 +4992,8 @@ class TestRound50Bypasses:
             "s = str(42)\nprint(s)",
             "g = globals()\nprint(len(g))",
             "x = '1 + 1'\neval(x)",
-            "f = print\nexec(\"f(1)\")",
-            "exec(\"y = 5\")",
+            'f = print\nexec("f(1)")',
+            'exec("y = 5")',
             "import os\nos.system('PATH=/usr/local/bin:$PATH ls')",
             "import os\nos.system('ls -la')",
         ],