Python Basics 🐍

A collection of beginner-friendly Python exercises covering core control flow concepts: loops, conditionals, functions, and recursion.

📂 Contents

🔐 Login System

A simple login flow with username/password validation and an interactive menu.

• Concepts: while loop, if/elif/else, continue, break, sys.exit()
• File: login.py
• Sample output: output.txt

🔁 Palindrome Checker

Three different ways to check if a value is a palindrome.

• Concepts: while loops, string slicing, functions, recursion
• File: palindrome.py

🚀 How to Run

Requires Python 3.x.

# Login system
cd login_system
python3 login.py

# Palindrome checker
cd palindrome
python3 palindrome.py

🎯 What you'll learn

Topic	Where
while True loops	login.py, palindrome.py
if/elif/else	both
continue / break	login.py
sys.exit()	login.py
String slicing s[::-1]	palindrome.py
Recursion	palindrome.py

📝 Notes

• The login credentials in login.py are demo only — never hardcode real passwords in plain code.
• All scripts use only the Python standard library.

📄 License

MIT — feel free to use, learn from, and modify.