Prompt composition and chaining in LangChain - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a prompt template with a variable called 'name'.

LangChain

from langchain.prompts import PromptTemplate

prompt = PromptTemplate(input_variables=["name"], template="Hello, [1]!")

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

Alocation

Bage

Cname

Dgreeting

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name in the template that is not listed in input_variables.

Forgetting to use curly braces around the variable in the template.

The variable in the template must match the input variable name, which is 'name'.

2fill in blank

medium

Complete the code to chain two prompts where the output of the first is input to the second.

LangChain

from langchain.chains import SimpleSequentialChain

chain = SimpleSequentialChain(chains=[chain1, [1]])

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

Achain2

Bchain3

Cchain4

Dchain5

Attempts:

3 left

💡 Hint

Common Mistakes

Using a chain variable that is not defined.

Mixing the order of chains.

To chain two prompts, you list the chains in order. The second chain is 'chain2'.

3fill in blank

hard

Fix the error in the prompt template by completing the missing input variable.

LangChain

prompt = PromptTemplate(input_variables=[[1]], template="What is the capital of {country}?")

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

A"city"

B"state"

C"capital"

D"country"

Attempts:

3 left

💡 Hint

Common Mistakes

Listing a variable in input_variables that is not used in the template.

Forgetting to include the variable used in the template.

The template uses {country}, so 'country' must be in input_variables.

4fill in blank

hard

Fill both blanks to create a chain that takes input 'question' and outputs 'answer'.

LangChain

from langchain.chains import LLMChain

chain = LLMChain(llm=llm, prompt=prompt, output_key=[1], input_key=[2])

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

A"answer"

B"question"

C"response"

D"query"

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping input_key and output_key values.

Using keys that don't match the prompt variables.

The output_key should be 'answer' and input_key should be 'question' to match the chain's data flow.

5fill in blank

hard

Fill all three blanks to create a prompt template with variables 'topic' and 'style', and chain them correctly.

LangChain

from langchain.prompts import PromptTemplate
from langchain.chains import SimpleSequentialChain

prompt1 = PromptTemplate(input_variables=[[1]], template="Write about [2].")
prompt2 = PromptTemplate(input_variables=["style"], template="Make it [3].")

chain1 = LLMChain(llm=llm, prompt=prompt1)
chain2 = LLMChain(llm=llm, prompt=prompt2)

chain = SimpleSequentialChain(chains=[chain1, chain2])

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

A"topic"

Btopic

C"style"

Dstyle

Attempts:

3 left

💡 Hint

Common Mistakes

Not quoting variable names in input_variables list.

Mismatching variable names between template and input_variables.

input_variables must be a list of strings, so 'topic' is in quotes. The template uses {{topic}} and {{style}} variables.