Variables and dynamic content in LangChain - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a variable that stores a user's name.

LangChain

user_name = [1]

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

AAlice

Bname

C"Alice"

Duser

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting quotes around text

Using variable names instead of text

Variables that store text must be enclosed in quotes.

2fill in blank

medium

Complete the code to insert a variable into a prompt string using f-string syntax.

LangChain

prompt = f"Hello, [1]! How can I help you today?"

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

Aname

Buser_name

C"user_name"

Dusername

Attempts:

3 left

💡 Hint

Common Mistakes

Putting quotes around the variable inside the f-string

Using a different variable name than defined

Inside an f-string, variables are used without quotes to insert their values.

3fill in blank

hard

Fix the error in the code to correctly create a prompt with dynamic content.

LangChain

prompt = f"Your order number is [1]."

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

Aorder-num

B"order_number"

CorderNumber

Dorder_number

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around the variable name

Using a variable name with invalid characters

The variable name must match exactly and be used without quotes inside the f-string.

4fill in blank

hard

Fill both blanks to create a dictionary with variable keys and values.

LangChain

data = { [1]: [2] }

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

A"user_id"

Buser_id

C12345

D"12345"

Attempts:

3 left

💡 Hint

Common Mistakes

Using variables without quotes as keys

Using numbers without quotes when strings are needed

Dictionary keys as strings need quotes, and values can be strings too.

5fill in blank

hard

Fill all three blanks to create a prompt template with variables and a condition.

LangChain

prompt = f"Hello, [1]! Your balance is [2]. [3]"

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

Auser_name

Bbalance

C"Please pay soon."

D"Thank you for your payment.%"

Attempts:

3 left

💡 Hint

Common Mistakes

Putting quotes around variable names inside the f-string

Forgetting to quote the message string

Use variables user_name and balance inside the f-string, and add a message as a string.