style: format code with Autopep8

This commit fixes the style issues introduced in 1ba3e08 according to the output
from Autopep8.

Details: None

python/openwebui/pipe_mcts.py

@@ -63,6 +63,7 @@
 
 # =============================================================================
 
+
 class AsyncIteratorCallbackHandler(AsyncCallbackHandler):
     def __init__(self):
         self.queue = asyncio.Queue()
@@ -86,6 +87,7 @@ async def __aiter__(self):
                 break
             yield token
 
+
 class LLMClient:
     def __init__(self, valves: "Pipe.Valves"):
         self.openai_api_key = valves.OPENAI_API_KEY
@@ -182,12 +184,14 @@ def get_chunk_content(self, chunk):
                 if "content" in delta:
                     yield delta["content"]
         except json.JSONDecodeError:
-            logger.error(f'ChunkDecodeError: unable to parse "{chunk_str[:100]}"')
+            logger.error(
+                f'ChunkDecodeError: unable to parse "{chunk_str[:100]}"')
 
 # =============================================================================
 
 # MCTS Classes
 
+
 class Node:
     def __init__(
         self,
@@ -240,6 +244,7 @@ def mermaid(self, offset=0, selected=None):
         logger.debug(f"Node Mermaid:\n{msg}")
         return msg
 
+
 class MCTSAgent:
     def __init__(
         self,
@@ -434,7 +439,8 @@ async def update_approach(self, answer: str, improvements: str):
         return await self.generate_completion(prompt)
 
     async def evaluate_answer(self, answer: str):
-        prompt = eval_answer_prompt.format(question=self.question, answer=answer)
+        prompt = eval_answer_prompt.format(
+            question=self.question, answer=answer)
         result = await self.generate_completion(prompt)
         try:
             score = int(re.search(r"\d+", result).group())
@@ -487,6 +493,7 @@ async def emit_replace(self, content: str):
 
 # Prompts
 
+
 thoughts_prompt = """
 <instruction>
 Give a suggestion on how this answer can be improved.
@@ -658,7 +665,8 @@ async def pipe(
         if match:
             backend, model_name = match.groups()
         else:
-            logger.error("Model ID should be in the format '*.mcts/backend/model_name'")
+            logger.error(
+                "Model ID should be in the format '*.mcts/backend/model_name'")
             logger.error(f"Invalid model ID: {model_id}")
             return ""