What is a chain in LangChain - Interactive Quiz & Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a simple chain that calls a language model.

LangChain

from langchain.chains import [1]
from langchain.llms import OpenAI

llm = OpenAI()
chain = [1](llm=llm)
result = chain.run("Hello!")

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

ALLMChain

BSimpleChain

CChainList

DLangChain

Attempts:

3 left

💡 Hint

Common Mistakes

Using a class that does not exist in LangChain.

Confusing chain classes with other utilities.

The LLMChain class is used to create a chain that connects a language model to inputs and outputs.

2fill in blank

medium

Complete the code to import the base class for chains in LangChain.

LangChain

from langchain.chains import [1]

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AChainBase

BChainable

CChain

DBaseChain

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'BaseChain' instead of 'Chain'.

Guessing class names without checking documentation.

The base class for chains in LangChain is called Chain.

3fill in blank

hard

Fix the error in the code to create a chain that uses a prompt template.

LangChain

from langchain.chains import LLMChain
from langchain.llms import OpenAI
from langchain.prompts import [1]

llm = OpenAI()
prompt = [1](template="Say hello to {name}.")
chain = LLMChain(llm=llm, prompt=prompt)
result = chain.run(name="Alice")

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AChainPrompt

BPromptChain

CTemplatePrompt

DPromptTemplate

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect class names for prompt templates.

Confusing prompt classes with chain classes.

The correct class to create prompt templates is PromptTemplate.

4fill in blank

hard

Fill both blanks to create a chain that uses a prompt template and runs with input.

LangChain

from langchain.chains import [1]
from langchain.prompts import [2]

chain = [1](llm=llm, prompt=[2](template="Hello, {user}!") )
result = chain.run(user="Bob")

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

ALLMChain

BPromptTemplate

CSimpleChain

DChainBase

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up chain and prompt class names.

Using classes that do not exist in LangChain.

Use LLMChain to create the chain and PromptTemplate for the prompt.

5fill in blank

hard

Fill all three blanks to create a chain that uses a prompt template, runs with input, and prints the result.

LangChain

from langchain.chains import [1]
from langchain.prompts import [2]
from langchain.llms import OpenAI

llm = OpenAI()
prompt = [2](template="Good morning, {name}!")
chain = [1](llm=llm, prompt=prompt)
result = chain.run(name="Eve")
print(result)

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

ALLMChain

BPromptTemplate

CSimpleChain

DChainBase

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong class names for chain or prompt.

Not matching variable names correctly.

The chain is created with LLMChain, the prompt with PromptTemplate, and the chain variable is named chain.