🚀 What are Variables?

Variables are containers that store data in your program. Think of them as labeled boxes where you can put different types of information and use them later.

💡 Real-World Analogy

Imagine variables like storage containers in your kitchen:

• Each container has a label (variable name)
• You can put different things inside (data)
• You can change what’s inside anytime
• The label helps you find what you need quickly

🎯 Key Concepts

• Variable: A named storage location in memory
• Assignment: Putting a value into a variable using =
• Data Type: The kind of data a variable can hold
• Value: The actual data stored in the variable

📝 Common Data Types

• Integer (int): Whole numbers like 10, -5, 1000
• Float: Decimal numbers like 3.14, -0.5, 99.99
• String (str): Text like “Hello”, “Python”, “2024”
• Boolean (bool): True or False values

📝 Variable Examples

/code

Different variable types

name = “Alice” # String
age = 25 # Integer
height = 5.6 # Float
is_student = True # Boolean

print(“Name:”, name)
print(“Age:”, age)
print(“Height:”, height)
print(“Student:”, is_student)

Output:
Name: Alice
Age: 25
Height: 5.6
Student: True

⚡ Variable Naming Rules

• Must start with a letter or underscore
• Can contain letters, numbers, and underscores
• Cannot use special characters or spaces
• Case-sensitive (age and Age are different)
• Should be descriptive and meaningful

💭 Remember

• Variables make your code flexible and reusable
• Choose meaningful variable names
• You can change variable values anytime
• Different data types serve different purposes

🔥 Practice Challenge

Create variables for:

1. Your favorite color (string)
2. Your lucky number (integer)
3. Your height in meters (float)
4. Whether you like programming (boolean)