2. Variables and Data Types

📚 Sarah is buying 5 books on an e-commerce website. She stores the number of books in a variable. Which of the following is the correct way to declare this variable in Python? 🐍

• int books = 5

• books = 5

• declare books = 5

• variable books = 5

What is the primary purpose of comments in code? 💬

• To make the code run faster ⚡

• To prevent certain code from executing 🚫

• To explain the code and make it more readable 📖

• To declare variables 📝

💪 A user enters their weight in kilograms on a fitness app. If user_weight = 70.5, what will the data type of user_weight be? 🐍

• int

• float

• str

• bool

🎮 John is naming a variable to store his score. Which of the following is NOT a valid variable name in Python?

• playerScore

• score_1

• 1score

• gameScore

🏦 In a bank transaction system, if a user tries to add a string and an integer, like in the code below, what will happen?

• 600

• "500100"

• Error

• None of the above

📱 A user inputs their phone number into a website form as a string. How can you convert to a string in Python? 🤔

• str(1234567890)

• convert(1234567890)

• str.int(1234567890)

• string(1234567890)

💳 In an online payment system, if amount = 100 and currency = "USD", what will be the result of amount + int(currency)? 🤔

• USD100

• 100USD

• Error

• None of the above

In a photo-sharing app 📸, if you want to remove a user's photo collection from the system, which Python command will delete the user_photos variable? 🧹

• del user_photos

• remove user_photos

• delete user_photos

• clear user_photos

Which of the following is NOT a basic data type in Python? 🤔

• int

• float

• char

• bool

💻 In Python, what happens to the text after the # symbol in the code?

• It runs as part of the code.

• It is ignored by Python.

• It becomes a variable name.

• It causes an error.