Fix codefactor-error

Author: bouwew

plugwise/helper.py

@@ -488,7 +488,7 @@ def all_appliances(self):
             if (
                 not self._smile_legacy
                 and appl.pwclass == "thermostat"
-                and appl.location == None
+                and appl.location is None
             ):
                 self.appl_data.pop(appl.id)