[Solved] Why does this code raise an error?from langchain.agents import AgentExecutor agent_executor = AgentExecutor(agent=None, tools=[]) agent_executor.run("Test") | LangChain

LangChain - Agents

Why does this code raise an error?

from langchain.agents import AgentExecutor
agent_executor = AgentExecutor(agent=None, tools=[])
agent_executor.run("Test")

AAgentExecutor does not accept keyword arguments

BAgent cannot be None; it must be a valid agent instance

Crun() requires two arguments

Dtools list cannot be empty

Step-by-Step Solution

Solution:

Step 1: Check agent parameter validity
Passing agent=None is invalid because AgentExecutor expects a valid agent object.
Step 2: Verify other parameters
An empty tools list is allowed; run() takes one argument; keyword args are accepted.
Final Answer:
Agent cannot be None; it must be a valid agent instance -> Option B
Quick Check:
Agent must be valid, not None [OK]

Quick Trick: AgentExecutor needs a real agent, not None [OK]

Common Mistakes:

MISTAKES

Master "Agents" in LangChain

9 interactive learning modes - each teaches the same concept differently

More LangChain Quizzes

Why does this code raise an error?