If Statements

If statements let your code make decisions based on conditions.

Basic If Statement

Note: Python uses indentation (4 spaces) to define code blocks, not curly braces.

Exercises

If with Multiple Statements

Nested If Statements

Multiple Conditions

Checking Truthiness

Practice Playground

Key Takeaways

• if condition: followed by indented code block
• Python uses 4 spaces for indentation
• Combine conditions with and, or, not
• Empty values ('', [], None, 0) are falsy
• Use is None to check for None