fix n=1 issue with langchain

litellm/tests/test_completion.py

@@ -726,7 +726,7 @@ def test_completion_replicate_vicuna():
 def test_completion_together_ai():
     model_name = "together_ai/togethercomputer/llama-2-70b-chat"
     try:
-        response = completion(model=model_name, messages=messages, max_tokens=256, logger_fn=logger_fn)
+        response = completion(model=model_name, messages=messages, max_tokens=256, n=1, logger_fn=logger_fn)
         # Add any assertions here to check the response
         print(response)
         cost = completion_cost(completion_response=response)

litellm/utils.py

@@ -980,7 +980,13 @@ def get_optional_params(  # use the openai defaults
         print_verbose(f"checking params for {model}")
         print_verbose(f"params passed in {passed_params}")
         print_verbose(f"non-default params passed in {non_default_params}")
-        unsupported_params = [k for k in non_default_params.keys() if k not in supported_params]
+        unsupported_params = []
+        for k in non_default_params.keys():
+            if k not in supported_params:
+                if k == "n" and n == 1: # langchain sends n=1 as a default value
+                    pass
+                else: 
+                    unsupported_params.append(k)
         if unsupported_params:
             raise ValueError("LiteLLM.Exception: Unsupported parameters passed: {}".format(', '.join(unsupported_params)))
 

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "litellm"
-version = "0.1.816"
+version = "0.1.817"
 description = "Library to easily interface with LLM API providers"
 authors = ["BerriAI"]
 license = "MIT License"