Python If Else

Introduction

Branching runs different code depending on a condition — age checks, login, game rules.

Syntax

Basic Example

Output

When you run the program above, you will see:

Adult or Minor (depends on age)

Code Explanation

1. Read the code top to bottom
2. Identify inputs and outputs
3. Run it locally and change one line

Real-World Usage

If Else appears in everyday Python projects — apps, scripts, sites, and tools.

• Production codebases
• Open-source libraries
• Interview questions
• Your own side projects

Common Mistakes

Copy-pasting without typing. Your fingers need the repetition.

Ignoring error messages. They usually point to the exact line.

Best Practices

• Type every example yourself instead of only reading
• Change values in the sample code and see what breaks
• Fix errors yourself before peeking at solutions

Tips

Tip: Keep a notes file with syntax snippets you use often for If Else.

Summary

1. You studied If Else in Python.
2. Practice with the exercises at the bottom of this page.
3. Move to the next lesson when you can write the examples from memory.