fix(langchain): filter string keys from usage object

hassiebp · hassiebp · commit 6e5a4e1f5e36 · 2025-05-22T19:43:58.000+02:00
diff --git a/langfuse/langchain/CallbackHandler.py b/langfuse/langchain/CallbackHandler.py
@@ -880,6 +880,8 @@ def _parse_usage_model(usage: typing.Union[pydantic.BaseModel, dict]):
                         "token_count"
                     ]
 
+    usage_model = {k: v for k, v in usage_model.items() if not isinstance(v, str)}
+
     return usage_model if usage_model else None
 
 

Original file line number	Diff line number	Diff line change
`@@ -880,6 +880,8 @@ def _parse_usage_model(usage: typing.Union[pydantic.BaseModel, dict]):`
`880`	`880`	`"token_count"`
`881`	`881`	`]`
`882`	`882`
	`883`	`+ usage_model = {k: v for k, v in usage_model.items() if not isinstance(v, str)}`
	`884`	`+`
`883`	`885`	`return usage_model if usage_model else None`
`884`	`886`
`885`	`887`