fix linting error

1 year ago · e10980d445
parent 0f7cde023b
commit e10980d445
1 changed files with 1 additions and 1 deletions
--- a/libs/langchain/langchain/chains/rl_chain/pick_best_chain.py
+++ b/libs/langchain/langchain/chains/rl_chain/pick_best_chain.py
@ -67,7 +67,7 @@ class PickBestFeatureEmbedder(base.Embedder[PickBestEvent]):
        self.auto_embed = auto_embed

    @staticmethod
-    def _str(embedding: List[float]):
+    def _str(embedding: List[float]) -> str:
        return " ".join([f"{i}:{e}" for i, e in enumerate(embedding)])

    def get_label(self, event: PickBestEvent) -> tuple: