The Ultimate Cheat Sheet of Equivalents in Python and JavaScript

This cheat sheet highlights analogies in Python and JavaScript. It might be interesting to you if you are a full-stack developer working with Django, Flask, Pyramid, or another Python-based framework, a server-side developer who wants to better understand the frontend, or a front-end developer who wants to better understand the serverside.

The cheat sheet consists of three sheets:

1. the traditional Python and JavaScript snippets which will work with Python 2.7-3.x and JavaScript based on ECMAScript 5 and ECMAScript 6 standards
2. the snippets with modern features of those programming languages which will require Python 3.6 and JavaScript based on the ECMAScript 6 standard (and Babel for backward compatibility)
3. a bonus sheet with the most useful list and dictionary operations

These topics are covered:

• integer parsing,
• conditional assignments,
• manipulating the values of object attributes and the values of dictionary keys,
• list operations,
• string operations,
• serializing and deserializing objects to and from JSON,
• working with regular expressions,
• custom error handling,
• string interpolation,
• unpacking lists,
• lambda functions,
• iterating through lists,
• generator functions,
• working with values in sets,
• handling function arguments,
• creating classes with or without inheritance,
• class properties.

Uhh. That's a lot! Everything is nicely formatted and ready to print.

But wait a moment. That's not all. As a bonus, you also get these topics:

• finding if a list contains all truthful elements,
• detecting if a list has any truthful elements,
• iterating through each element and its index,
• getting the results of a function for each element in a list,
• filtering elements by a function,
• reducing elements by a function to a single value,
• merging dictionaries.

Get it now and master your craft like a charm!

The current document revision is 12. Last modified in March 2019. PDF in color. Syntax highlighted. It is optimized for laser printing.