[Solved] Examine the following tool definition:from langchain.tools import Tool tool = Tool(name='reverse', func=lambda x: x[::-1])What is the issue with this code? | LangChain

LangChain - Agents

Examine the following tool definition:

from langchain.tools import Tool
tool = Tool(name='reverse', func=lambda x: x[::-1])

What is the issue with this code?

AThe import statement should be from langchain.agents instead

BThe lambda function syntax is invalid for string reversal

CThe tool lacks a description parameter which is recommended for clarity

DThe tool name cannot be a string

Step-by-Step Solution

Solution:

Step 1: Analyze the code
The code imports Tool correctly and defines a valid lambda function for reversing strings.
Step 2: Identify missing best practice
While not mandatory, a description parameter is recommended to explain the tool's purpose.
Step 3: Validate other options
Import from langchain.tools is correct; tool name as string is valid.
Final Answer:
The tool lacks a description parameter which is recommended for clarity -> Option C
Quick Check:
Description improves tool usability [OK]

Quick Trick: Always add description to tools for clarity [OK]

Common Mistakes:

MISTAKES

Master "Agents" in LangChain

9 interactive learning modes - each teaches the same concept differently

More LangChain Quizzes

Examine the following tool definition: