Lambda function concept in AWS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a basic AWS Lambda function handler in Python.

AWS

def lambda_handler(event, context):
    return [1]

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

Aprint("Hello")

B"Hello from Lambda!"

Cevent + context

DNone

Attempts:

3 left

💡 Hint

Common Mistakes

Using print instead of return

Returning None which means no response

The Lambda handler must return a value, here a simple greeting string.

2fill in blank

medium

Complete the code to access the 'name' key from the event dictionary in the Lambda function.

AWS

def lambda_handler(event, context):
    name = event[1]"name"
    return f"Hello, {name}!"

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

A["name"]

B("name")

C.name

D{'name'}

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses or dot notation which are invalid for dict access

Event is a dictionary; use square brackets to access keys.

3fill in blank

hard

Fix the error in the Lambda function code to correctly handle missing 'age' key in event.

AWS

def lambda_handler(event, context):
    age = event.get([1], 0)
    return f"Age is {age}"

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

Aage

Bevent

C0

D"age"

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable name without quotes

Passing wrong type as key

The key must be a string in quotes when using dict.get().

4fill in blank

hard

Fill both blanks to create a Lambda function that returns the square of a number passed in event.

AWS

def lambda_handler(event, context):
    number = event[1]"number"
    result = number [2] 2
    return result

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

A["number"]

B**

C*

D("number")

Attempts:

3 left

💡 Hint

Common Mistakes

Using * instead of ** for square

Using parentheses instead of brackets for dict access

Access the number with event["number"] and use ** for exponentiation.

5fill in blank

hard

Fill all three blanks to create a Lambda function that returns a dictionary with the original number, its square, and a greeting message.

AWS

def lambda_handler(event, context):
    num = event[1]"num"
    square = num [2] 2
    return [3]

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

A["num"]

B**

C{"number": num, "square": square, "message": "Hello!"}

D("num")

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses instead of brackets

Using * instead of **

Returning a string instead of a dictionary

Access 'num' with event["num"], square with **, and return a dictionary with keys and values.