use set difference method instead of - operator

canonical · Jul 9, 2024 · 45ea494 · 45ea494
1 parent ffcdc00
commit 45ea494
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/anvil-python/anvil/utils.py b/anvil-python/anvil/utils.py
@@ -61,4 +61,4 @@ def machines_missing_juju_controllers() -> list[str]:
         ["juju", "machines", "--format", "json"], capture_output=True
     )
     machines = set(json.loads(machines_res.stdout)["machines"].keys())
-    return list(machines - controller_machines)
+    return list(machines.difference(controller_machines))