Upd

src/equipment/turtle_device.py

@@ -54,7 +54,6 @@ class TurtleDevice(SynchronyDevice):
         raise NoSuchTrait
 
     def invalidate(self, trait_name: str) -> None:
-        # NOTE: если я правильно понял, что должен делать метод
         self.write(trait_name=trait_name, value=Turtle().__getattribute__(trait_name))
         return
 
@@ -88,10 +87,13 @@ class TurtleDevice(SynchronyDevice):
         result = []
         for method_name in methods:
             method = getattr(self.turtle, method_name)
-            args = inspect.signature(method).parameters
+            parameters = inspect.signature(method).parameters
+
             arg_types = {}
-            for arg_name, arg in args.items():
-                arg_types[arg_name] = arg.annotation
+            for arg_name, arg in parameters.items():
+                arg_types[arg_name] = parameters[arg_name].annotation
+
+
             result.append(
                 ActionDescriptor(
                     name=method_name, info=method.__doc__, arguments=arg_types