code: def pre_langfuse_setup():
      """
      Set up the logging for the 'pre_langfuse_setup' function.
      """
      # sends logs to langfuse.log
      import logging
  
      # Configure the logging to write to a file
      logging.basicConfig(filename="langfuse.log", level=logging.DEBUG)
      logger = logging.getLogger()
  
      # Add a FileHandler to the logger
      file_handler = logging.FileHandler("langfuse.log", mode="w")
      file_handler.setLevel(logging.DEBUG)
      logger.addHandler(file_handler)
      return
  
file_path: litellm/litellm/tests/test_alangfuse.py
imports: import json
  import sys
  import os
  import io, asyncio
  import logging
  from litellm import completion
  import litellm
  import time
  import pytest
label_desc: Use image node_id 2 for calling a global function with example usage: pre_langfuse_setup() without return types