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 server side.

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 themes 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 themes:

• finding if a list contains all truthful elements,
  
• finding 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!

Current document revision is 12. Last modified in March 2019. PDF in color. Syntax highlighted. Optimized for laser printing.