._root: set a _default_lo_addrs and apply it when not provided by caller

Author: goodboy

tractor/_root.py

@@ -46,8 +46,14 @@
 
 
 # set at startup and after forks
-_default_arbiter_host: str = '127.0.0.1'
-_default_arbiter_port: int = 1616
+_default_lo_host: str = '127.0.0.1'
+_default_port: int = 1616
+
+# default registry always on localhost
+_default_lo_addrs: list[tuple[str, int]] = [(
+    _default_lo_host,
+    _default_port,
+)]
 
 
 logger = log.get_logger('tractor')
@@ -124,10 +130,8 @@ async def open_root_actor(
 
     registry_addrs: list[tuple[str, int]] = (
         registry_addrs
-        or [(  # default on localhost
-            _default_arbiter_host,
-            _default_arbiter_port,
-         )]
+        or     
+        _default_lo_addrs
     )
 
     loglevel = (loglevel or log._default_loglevel).upper()
@@ -329,9 +333,7 @@ def run_daemon(
 
     # runtime kwargs
     name: str | None = 'root',
-    registry_addrs: list[tuple[str, int]] = [
-        (_default_arbiter_host, _default_arbiter_port)
-    ],
+    registry_addrs: list[tuple[str, int]] = _default_lo_addrs,
 
     start_method: str | None = None,
     debug_mode: bool = False,