Cheat Sheets

Quick reference guides to recall syntax, commands, formulas, and patterns — fast.

Python

Python Basics Data Types Loops & Conditions Functions Lists & Dictionaries String Methods File Handling Error Handling OOP

SQL & Databases

SQL Basics SQL Joins Aggregations Window Functions Subqueries PostgreSQL MySQL

Data Science & Machine Learning

NumPy Pandas Data Cleaning Visualization ML Algorithms Model Evaluation Feature Engineering