General

29 free general lessons — newest first.

General lessons

3:58Free

Smallest Palindromic Rearrangement I — 🟡 Intermediate (2/3) — LeetCode Daily Python Solution (half the string, mirror the rest)

General

0:39Free

Speed challenge: spot the bug in under 30 seconds, five rounds

General

5:45Free

Maximum Product of Three Numbers — 🟢 Beginner (1/3) — LeetCode Python Solution (the negative trap)

GeneralEasy

3:28Free

Maximum Product of Three Numbers — 🟡 Intermediate (2/3) — LeetCode Daily Python Solution (the two-negatives trap)

General

4:03Free

74% of Women Lived. 19% of Men Didn't. The Data Explains Why

General

27:59Free

Lesson 11: Why Does return None Happen to Everyone?

General

3:50Free

Lesson: The 10 Python Functions You've Used 1,000 Times

General

4:29Free

Maximum Product of Two Digits — 🔴 Advanced (3/3) — LeetCode Daily Python Solution (swap one digit, +60)

General

6:40Free

Maximum Product of Two Digits — 🟢 Beginner (1/3) — LeetCode Daily Python Solution (the trick nobody sees)

General

15:57Free

Number of Unique XOR Triplets II — LeetCode Daily Python Solution (the trick nobody sees)

General

4:10Free

Python Lesson 6: Conditionals — if, elif, else, Truthiness & Nested Logic

General

4:24Free

How Python Got Its Name (It's Not the Snake)

General

13:33Free

Number of Unique XOR Triplets I — LeetCode Daily Python Solution (the trick nobody sees)

General

4:10Free

Python Lesson 7: while & for Loops Explained (range, break, continue)

General

4:32Free

Sorted GCD Pair Queries — LeetCode Daily Python Solution (5 Billion Pairs, No List)

GeneralHard

4:40Free

Python Lesson 3: Strings & String Methods (Indexing, Slicing, F-Strings, split/join/strip)

General

4:44Free

Shift 2D Grid — LeetCode Daily Python Solution (the trick nobody sees)

General

5:20Free

Python Lesson 5: User Input & Output — input(), f-strings & Your First Interactive Program

General

5:08Free

Python Lesson 2: Variables & Data Types (int, float, str, bool) Explained

General

6:51Free

Python Lesson 1: Install Python & Run Your First Code (REPL + .py Files)

General

6:47Free

Python Lesson 4: Numbers, Operators & Expressions — Arithmetic, Comparison, Logic & Precedence

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5:45Free

GCD of Odd and Even Sums: Why the Answer Is Always n

General

5:00Free

Lesson: Code That Reads Like English Still Breaks You

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4:15Free

What If 20 Lines of Code Beat Most Traders' Intuition?

General

5:12Free

Why Does list[5] Crash? Python Lists From Zero to Confident

General

16:15Free

Maximize Active Section with Trade II — LeetCode Daily Python Solution (the 0-1-0 sandwich trick)

GeneralHard

0:33Free

How a Web Request Actually Works (in One Diagram)

General

4:42Free

Python Basics: Variables, Loops, Lists & Functions Explained Simply

General

3:57Free

Find Greatest Common Divisor of Array — LeetCode Daily Python Solution (the trick nobody sees)

General