What is LangChain - Interactive Quiz & Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the PromptTemplate class from LangChain.

LangChain

from langchain.prompts import [1]

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ALangChain

BChain

CPromptTemplate

DPrompt

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing it with 'Prompt' or 'Chain'.

Wrong module path.

PromptTemplate is a core class in LangChain for defining prompts.

2fill in blank

medium

Complete the code to create a simple PromptTemplate instance.

LangChain

prompt = [1].from_template('Tell me a joke about {topic}')

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APromptTemplate

BLLMChain

CChatOpenAI

DChain

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting '.from_template'.

Using the wrong class.

Use PromptTemplate.from_template() to create prompts easily.

3fill in blank

hard

Complete the code to import LLMChain.

LangChain

from langchain.chains import [1]

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ASimpleChain

BPromptChain

CLangChain

DLLMChain

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Chain' instead of 'LLMChain'.

Wrong import path.

LLMChain combines an LLM and a prompt to form a chain.

4fill in blank

hard

Fill both blanks to create an LLMChain (assume llm is defined).

LangChain

chain = [1](llm=llm, prompt=prompt)
response = chain.[2]('cats')

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ALLMChain

Brun

CPromptTemplate

Dinvoke

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'invoke' (newer API) instead of 'run'.

Wrong parameters for LLMChain.

Create with LLMChain(llm=llm, prompt=prompt) and run with chain.run().

5fill in blank

hard

Fill all three blanks for a complete simple LangChain example (assume imports and llm done).

LangChain

prompt = PromptTemplate.from_template('[1] {topic}')
chain = LLMChain(llm=llm, prompt=prompt)
print(chain.[2]('[3]'))

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ATell me about

Brun

Ccats

Dexecute

Attempts:

3 left

💡 Hint

Common Mistakes

Wrong run method.

Mismatched input variable.

Incomplete template.

Use a template string with variable, run the chain, and provide input like 'cats'.