once

python/langsmith/_internal/_beta_decorator.py

@@ -7,12 +7,15 @@ class LangSmithBetaWarning(UserWarning):
     """This is a warning specific to the LangSmithBeta module."""
 
 
+@functools.lru_cache(maxsize=100)
+def _warn_once(message: str) -> None:
+    warnings.warn(message, LangSmithBetaWarning, stacklevel=2)
+
+
 def warn_beta(func: Callable) -> Callable:
     @functools.wraps(func)
     def wrapper(*args, **kwargs):
-        warnings.warn(
-            f"Function {func.__name__} is in beta.", LangSmithBetaWarning, stacklevel=2
-        )
+        _warn_once(f"Function {func.__name__} is in beta.")
         return func(*args, **kwargs)
 
     return wrapper

python/langsmith/async_client.py

@@ -5,7 +5,6 @@
 import asyncio
 import datetime
 import uuid
-import warnings
 from typing import (
     Any,
     AsyncIterator,
@@ -47,9 +46,7 @@ def __init__(
         retry_config: Optional[Mapping[str, Any]] = None,
     ):
         """Initialize the async client."""
-        warnings.warn(
-            "Class AsyncClient is in beta.", ls_beta.LangSmithBetaWarning, stacklevel=2
-        )
+        ls_beta._warn_once("Class AsyncClient is in beta.")
         self._retry_config = retry_config or {"max_retries": 3}
         _headers = {
             "Content-Type": "application/json",