1o55

aspe:keyoxide.org:HOT6KMK2MDVWOHG5LNT3XFRK5U

1o55

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• I am 1055 (https://keybase.io/1055) on keybase.
• I have a public key ASCDzIHJ4BtrejU2kntCjFFQkMLx_3yumVGI5prmJ9RSCgo

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1o55

Comprehensions in Python the Jedi way

by Bjørn Friese

Beautiful is better than ugly. Explicit is better than implicit.

-- The Zen of Python

I frequently deal with collections of things in the programs I write. Collections of droids, jedis, planets, lightsabers, starfighters, etc. When programming in Python, these collections of things are usually represented as lists, sets and dictionaries. Oftentimes, what I want to do with collections is to transform them in various ways. Comprehensions is a powerful syntax for doing just that. I use them extensively, and it's one of the things that keep me coming back to Python. Let me show you a few examples of the incredible usefulness of comprehensions.

1o55

on("chat:message", function(msg) {
    //checks if the message is 1) an API message and 2) contains our call
    if (msg.type == "api" && msg.content.indexOf("!wildshape") !== -1) {
        //splits the contents of the message in to parts and stores them in an array
        var args = msg.content.split(/\s+/);
        //deletes the "!wildshape" from the array of message contents
        args.shift();
     	var mycharName = args[0];
		var mycharobj = findObjs({
			_type: "character",