Permutations in Python 😎 | itertools Module Explained Simply (No Maths Fear!)

Permutations and combinations sound scary, but in Python they are actually very simple 😄
In this video, I explain permutations step by step using Python’s powerful built-in module itertools.

🔹 What you will learn in this video:
✔ What is permutation (with simple examples)
✔ Difference between permutation and combination
✔ How to use itertools.permutations()
✔ How to use itertools.combinations()
✔ Understanding product() with real examples
✔ How to solve permutation problems without writing complex logic

This video is perfect for:
✅ Python beginners
✅ Students & job aspirants
✅ Coding interview preparation
✅ Anyone scared of permutations 😅

👉 Practice the problems given at the end of the video
👉 Type the code yourself (don’t copy-paste 😉)

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🧪 Practice Problems (Beginner → Intermediate)
🟢 Practice Problem 1 (Very Easy)

Given a list:

['A', 'B', 'C']


👉 Generate all permutations of the list.

🟢 Practice Problem 2 (Easy)

Given:

[1, 2, 3, 4]


👉 Generate permutations of 2 elements only.

🟡 Practice Problem 3 (Medium)

Given:

['Red', 'Blue', 'Green']


👉 Generate all combinations of 2 colors.

🟡 Practice Problem 4 (Medium)

Given two lists:

[1, 2]
['X', 'Y', 'Z']


👉 Find the Cartesian product using itertools.product().

🔵 Practice Problem 5 (Interview Level)

Given a list:

[10, 20, 30, 40]


1️⃣ Find permutations of length 3
2️⃣ Count how many permutations are generated
3️⃣ Verify using the formula nPr

🔥 Practice Problem 6 (Challenge)

Given a string:

"ABC"


👉 Generate all permutations and print them without converting to a list.

(Hint: use a for loop)