Cheatsheets

A dense Python cheat sheet with just what you need. Comprehensive but selective coverage of core Python, with links to detailed documentation and resources. Responsive design with light and dark modes. Printable PDF. Feedback is welcome.

Anyone can forget how to make character classes for a regex, slice a list or do a for loop. This cheat sheet tries to provide a basic reference for beginner and advanced developers, lower the entry barrier for newcomers and help veterans refresh the old tricks.

In this article, we will be doing some common operations while working with JSON data in Python...

The home for open source SQL snippets.

Access our quick reference guides to replicate common data science tasks in Python, R, and SQL—from importing data to advanced NLP in Python.

Read on to find the most useful reference guides for Python, SQL, machine learning and even linear algebra.