pipe default key (#11788)

langchain-ai · Oct 14, 2023 · f3ad22e · f3ad22e
1 parent 6e78dac
commit f3ad22e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/libs/langchain/langchain/schema/runnable/base.py b/libs/langchain/langchain/schema/runnable/base.py
@@ -992,14 +992,15 @@ def configurable_fields(
     def configurable_alternatives(
         self,
         which: ConfigurableField,
+        default_key: str = "default",
         **kwargs: Runnable[Input, Output],
     ) -> RunnableSerializable[Input, Output]:
         from langchain.schema.runnable.configurable import (
             RunnableConfigurableAlternatives,
         )
 
         return RunnableConfigurableAlternatives(
-            which=which, default=self, alternatives=kwargs
+            which=which, default=self, alternatives=kwargs, default_key=default_key
         )