code: def main():
      from wandb.integration.langchain import WandbTracer
  
      handler = WandbTracer()
      check_agent(handler)
      handler.finish()
  
imports: from langchain.agents import AgentType, initialize_agent, load_tools
  from langchain.llms import OpenAI
label_desc: Use image node_id 2 for calling a global function with example usage: main() without return types