deprecate asyncio.set_event_loop_policy

graingert · graingert · commit a1fa65776c3f · 2023-10-11T19:14:31.000+01:00
diff --git a/Lib/asyncio/events.py b/Lib/asyncio/events.py
@@ -18,6 +18,7 @@
 import subprocess
 import sys
 import threading
+import warnings
 
 from . import format_helpers
 
@@ -787,6 +788,9 @@ def set_event_loop_policy(policy):
     """Set the current event loop policy.
 
     If policy is None, the default policy is restored."""
+    warnings._deprecated("set_event_loop_policy",
+                         "{name!r} is deprecated as of Python 3.13 and will be "
+                         "removed in Python {remove}.", remove=(3, 15))
     global _event_loop_policy
     if policy is not None and not isinstance(policy, AbstractEventLoopPolicy):
         raise TypeError(f"policy must be an instance of AbstractEventLoopPolicy or None, not '{type(policy).__name__}'")
