code: from langchain.llms import OpenAI
  from callback import MyCallbackHandler
  from langchain.callbacks.base import BaseCallbackManager
  
  class QaLlm():
  
      def __init__(self) -> None:
          manager = BaseCallbackManager([MyCallbackHandler()])
          self.llm = OpenAI(temperature=0, callback_manager=manager, model_name="gpt-3.5-turbo")
  
      def get_llm(self):
          return self.llm
apis: langchain.llms.OpenAI
extract_api: [((259, 334), 'langchain.llms.OpenAI', 'OpenAI', ([], {'temperature': '(0)', 'callback_manager': 'manager', 'model_name': '"""gpt-3.5-turbo"""'}), "(temperature=0, callback_manager=manager, model_name='gpt-3.5-turbo')\n", (265, 334), False, 'from langchain.llms import OpenAI\n'), ((218, 237), 'callback.MyCallbackHandler', 'MyCallbackHandler', ([], {}), '()\n', (235, 237), False, 'from callback import MyCallbackHandler\n')]