Prompt templates and variables in Prompt Engineering / GenAI - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a prompt template with a variable placeholder.

Prompt Engineering / GenAI

prompt = "Hello, [1]! Welcome to AI."

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

A{name}

B{input}

C{user}

D{variable}

Attempts:

3 left

💡 Hint

Common Mistakes

Using plain text without curly braces.

Using a variable name that doesn't match the context.

The placeholder {user} is commonly used to represent the variable part in prompt templates.

2fill in blank

medium

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

Prompt Engineering / GenAI

name = "Alice"
prompt = f"Hello, [1]! How are you?"

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

A{name}

B{user}

C{input}

D{variable}

Attempts:

3 left

💡 Hint

Common Mistakes

Using placeholders like {user} instead of the actual variable name.

Not using f-string syntax.

In f-strings, variables are inserted directly without curly braces inside the string, so {name} is correct.

3fill in blank

hard

Fix the error in the prompt template by correctly formatting the variable placeholder.

Prompt Engineering / GenAI

prompt = "Your input is: [1]".format(input)

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

A{}

B{input}

C{value}

D{0}

Attempts:

3 left

💡 Hint

Common Mistakes

Using named placeholders without passing named arguments.

Using empty braces {} without arguments.

Using {0} matches the first argument passed to format(), which is 'input'.

4fill in blank

hard

Fill both blanks to create a prompt template that uses named variables with format().

Prompt Engineering / GenAI

prompt = "Hello, [1]! Your score is [2].".format([1]="Alice", [2]=95)

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

Aname

Bscore

Cuser

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Mismatch between placeholder names and format argument names.

Using positional placeholders with named arguments.

The placeholders and format arguments must use the same variable names; here 'user' and 'score' are used.

5fill in blank

hard

Fill all three blanks to build a prompt template using f-string with multiple variables.

Prompt Engineering / GenAI

user = "Bob"
score = 88
prompt = f"Hello, [1]! Your score is [2] out of [3]."

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

Auser

Bscore

C100

Dtotal

Attempts:

3 left

💡 Hint

Common Mistakes

Using undefined variable names.

Putting variables inside quotes inside f-string.

The f-string inserts variables directly: user, score, and a fixed total of 100.

Practice

1. What is the main purpose of using prompt templates in AI?

easy

A. To store large datasets

B. To train the AI model faster

C. To improve the AI's hardware performance

D. To reuse a prompt with different variables easily

Solution

1. Step 1: Understand what prompt templates do

   Prompt templates have placeholders that can be replaced with different values to create new prompts without rewriting.

2. Step 2: Identify the main benefit

   This lets you reuse the same prompt structure with different variables, saving time and effort.

3. Final Answer:

   To reuse a prompt with different variables easily -> Option D

4. Quick Check:

   Prompt templates = reuse with variables [OK]

Hint: Templates save rewriting by using placeholders [OK]

Common Mistakes:

• Thinking templates speed up model training
• Confusing templates with data storage
• Assuming templates improve hardware

2. Which of the following is the correct way to define a prompt template with a variable named name?

easy

A. "Hello, <name>! How can I help you today?"

B. "Hello, $name! How can I help you today?"

C. "Hello, {name}! How can I help you today?"

D. "Hello, %name%! How can I help you today?"

Solution

1. Step 1: Recognize common placeholder syntax

   Curly braces { } are widely used to mark variables in prompt templates.

2. Step 2: Match the correct syntax

   "Hello, {name}! How can I help you today?" uses {name}, which is the standard placeholder format for variables.

3. Final Answer:

   "Hello, {name}! How can I help you today?" -> Option C

4. Quick Check:

   Variables use curly braces { } [OK]

Hint: Use curly braces {variable} for placeholders [OK]

Common Mistakes:

• Using $ or % instead of curly braces
• Using angle brackets which are not standard
• Confusing variable syntax with other languages

3. Given the prompt template "Translate '{text}' to French." and the variable text = 'Good morning', what is the final prompt sent to the AI?

medium

A. "Translate 'Good morning' to French."

B. "Translate {text} to French."

C. "Translate 'text' to French."

D. "Translate Good morning to French."

Solution

1. Step 1: Replace the placeholder with the variable value

   The placeholder {text} is replaced by the string 'Good morning'.

2. Step 2: Keep the quotes around the inserted text

   The template includes single quotes around {text}, so the final prompt keeps them around 'Good morning'.

3. Final Answer:

   "Translate 'Good morning' to French." -> Option A

4. Quick Check:

   Placeholder replaced by variable value [OK]

Hint: Replace placeholders with variable values exactly [OK]

Common Mistakes:

• Leaving placeholder text unchanged
• Removing quotes around variable
• Replacing with variable name as string

4. You wrote this prompt template: "Summarize the article: {content}". But when you run it, the AI returns an error. What is the most likely mistake?

medium

A. You used curly braces instead of square brackets

B. You forgot to provide a value for the variable content

C. The AI model does not support prompt templates

D. The prompt template is too long

Solution

1. Step 1: Check variable usage in prompt templates

   Prompt templates require all variables to have values before sending to AI.

2. Step 2: Identify common error

   If content is missing, the placeholder {content} remains unresolved, causing errors.

3. Final Answer:

   You forgot to provide a value for the variable content -> Option B

4. Quick Check:

   Missing variable value causes errors [OK]

Hint: Always assign values to all variables before use [OK]

Common Mistakes:

• Changing placeholder syntax incorrectly
• Blaming AI model for template errors
• Ignoring missing variable values

5. You want to create a prompt template that asks for a summary and a sentiment analysis of a text. Which template correctly uses two variables text and task to handle this?

hard

A. "Please perform {task} on the following text: '{text}'."

B. "Please perform {text} on the following task: '{task}'."

C. "{text} and {task} are the inputs."

D. "Analyze '{task}' and summarize '{text}'."

Solution

1. Step 1: Understand the roles of variables

   task should specify the action (summary or sentiment), and text is the content to analyze.

2. Step 2: Check template clarity and correctness

   "Please perform {task} on the following text: '{text}'." clearly asks to perform the task on the text, using variables correctly in context.

3. Final Answer:

   "Please perform {task} on the following text: '{text}'." -> Option A

4. Quick Check:

   Variables used clearly and logically [OK]

Hint: Match variable roles to prompt meaning [OK]

Common Mistakes:

• Swapping variable meanings
• Using variables without context
• Mixing variable names incorrectly