Creating tools for agents in LangChain - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Tool class from langchain.tools.

LangChain

from langchain.tools import [1]

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ATool

BAgent

CChain

DPrompt

Attempts:

3 left

💡 Hint

Common Mistakes

Importing Agent instead of Tool

Using Chain which is unrelated here

Forgetting to import anything

The Tool class is imported from langchain.tools to create custom tools for agents.

2fill in blank

medium

Complete the code to define a simple tool function that returns a greeting.

LangChain

def greet(name: str) -> str:
    return f"Hello, [1]!"

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Ainput

Buser

Cname

Dgreet

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable not defined in the function

Using the function name inside the string

The function parameter is name, so we use it inside the f-string to greet the user.

3fill in blank

hard

Fix the error in the tool creation by filling the missing argument for the Tool constructor.

LangChain

my_tool = Tool(name="GreetTool", func=greet, description=[1])

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A123

Bgreet

CNone

D"A tool that greets users"

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the function instead of a description string

Passing None or a number instead of a string

The description argument should be a string explaining what the tool does.

4fill in blank

hard

Fill both blanks to create a tool list and initialize an agent with it.

LangChain

tools = [[1]]
agent = initialize_agent(tools=[2], agent_type="zero-shot-react-description")

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Amy_tool

B[my_tool]

Ctools

D[]

Attempts:

3 left

💡 Hint

Common Mistakes

Using [my_tool] for the first blank (creates nested list)

Using my_tool for the second blank (instead of tools)

The list tools contains my_tool. The agent is initialized with this list.

5fill in blank

hard

Fill all three blanks to define a tool function, create the tool, and add it to the tools list.

LangChain

def [1](query: str) -> str:
    return f"Searching for: {query}"

search_tool = Tool(name="Search", func=[2], description="Searches the web")
tools = [[3]]

Drag options to blanks, or click blank then click option'

Asearch

Csearch_tool

Dgreet

Attempts:

3 left

💡 Hint

Common Mistakes

Using different names for the function and func argument

Adding the function instead of the tool to the list

The function is named search, used as the func in the tool, and the tool is added to the list.