Lesson 3: Variables and Strings

Topics Covered:

• Declaring and using variables
• Working with text using strings
• Basic string operations and concatenation

What is a Variable?

A variable stores information that your program can use later. You can think of it as a box with a label.

name = "Alex"
age = 12

Using Strings

A string is any text inside quotation marks. You can use single (') or double (") quotes:

greeting = "Hello"
nickname = 'Buddy'

Combining Strings

You can combine strings using the + operator:

name = "Alex"
print("Hello, " + name + "!")

Activity: Build a Sentence

Ask for a user’s name and favorite food, then print a custom message:

name = input("What is your name? ")
food = input("What is your favorite food? ")
print(name + " loves to eat " + food + ".")

Challenge

• Ask the user for their favorite