[Python] Ensure if null (#969)

Calling ensure_config() within from_runnable_config adds unnecessary time in most cases; only call if the input is null

python/langsmith/run_trees.py

@@ -332,9 +332,13 @@ def from_runnable_config(
                 "RunTree.from_runnable_config requires langchain-core to be installed. "
                 "You can install it with `pip install langchain-core`."
             ) from e
-        config_ = ensure_config(
-            cast(RunnableConfig, config) if isinstance(config, dict) else None
-        )
+        if config is None:
+            config_ = ensure_config(
+                cast(RunnableConfig, config) if isinstance(config, dict) else None
+            )
+        else:
+            config_ = cast(RunnableConfig, config)
+
         if (
             (cb := config_.get("callbacks"))
             and isinstance(cb, (CallbackManager, AsyncCallbackManager))

python/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langsmith"
-version = "0.1.110"
+version = "0.1.111"
 description = "Client library to connect to the LangSmith LLM Tracing and Evaluation Platform."
 authors = ["LangChain <support@langchain.dev>"]
 license = "MIT"