[ray_client] actors v0 (#12388)

python/ray/actor.py

@@ -12,6 +12,11 @@ from ray.util.placement_group import (
 from ray import ActorClassID, Language
 from ray._raylet import PythonFunctionDescriptor
 from ray import cross_language
+from ray.util.inspect import (
+    is_function_or_method,
+    is_class_method,
+    is_static_method,
+)
 
 logger = logging.getLogger(__name__)
 
@@ -195,7 +200,7 @@ class ActorClassMethodMetadata(object):
         self = cls.__new__(cls)
 
         actor_methods = inspect.getmembers(modified_class,
-                                           ray.utils.is_function_or_method)
+                                           is_function_or_method)
         self.methods = dict(actor_methods)
 
         # Extract the signatures of each of the methods. This will be used
@@ -208,9 +213,8 @@ class ActorClassMethodMetadata(object):
             # Whether or not this method requires binding of its first
             # argument. For class and static methods, we do not want to bind
             # the first argument, but we do for instance methods
-            is_bound = (ray.utils.is_class_method(method)
-                        or ray.utils.is_static_method(modified_class,
-                                                      method_name))
+            is_bound = (is_class_method(method)
+                        or is_static_method(modified_class, method_name))
 
             # Print a warning message if the method signature is not
             # supported. We don't raise an exception because if the actor
@@ -956,7 +960,7 @@ def modify_class(cls):
     Class.__module__ = cls.__module__
     Class.__name__ = cls.__name__
 
-    if not ray.utils.is_function_or_method(getattr(Class, "__init__", None)):
+    if not is_function_or_method(getattr(Class, "__init__", None)):
         # Add __init__ if it does not exist.
         # Actor creation will be executed with __init__ together.