Python Wiki

Your free Python reference. Everything from basics to data structures, organized for quick lookup.

Python Basics

A complete, structured Python course designed to take you from beginner to confident problem solver. Built over one year with one goal: teach you to think in Python.

Why Python

Python powers AI, data platforms, automation, and cloud systems. It's readable, practical, and accessible, whether you're entering AI, data engineering, analytics, or simply leveling up your current role.

Access Options

Tools You'll Need


Data Structure Challenges

#1 Challenge - Data Structure

You're given messy order data: duplicates, missing names, inconsistent formatting. Clean it, enrich it, and find key insights.

Step 1: Clean

  • Remove duplicate IDs
  • Fix names and formats
  • Handle missing values
  • Normalize statuses

Step 2: Analyze

  • Count paid orders
  • Compute total and average revenue
  • Find top customer
  • Show top 2 orders by amount