BartoszCki

Transforming Code into Beautiful, Idiomatic Python

Notes from Raymond Hettinger's talk at pycon US 2013 video, slides.

The code examples and direct quotes are all from Raymond's talk. I've reproduced them here for my own edification and the hopes that others will find them as handy as I have!

Looping over a range of numbers

for i in [0, 1, 2, 3, 4, 5]:

mmellison

import asyncio
from concurrent import futures
import functools
import inspect
import threading

from grpc import _server

def _loop_mgr(loop: asyncio.AbstractEventLoop):

d2s

Installing Node.js with nvm to Linux & macOS & WSL

A quick guide on how to setup Node.js development environment.

Install nvm for managing Node.js versions

nvm allows installing several versions of Node.js to the same system. Sometimes applications require a certain versions of Node.js to work. Having the flexibility of using specific versions can help.

1. Open new Terminal window.

cristobal

#!/usr/bin/env sh
# @see http://stackoverflow.com/questions/30040708/how-to-mount-local-volumes-in-docker-machine
# @see https://github.com/boot2docker/boot2docker/blob/master/doc/FAQ.md

################################################################################
# Dependency Section                                                           #
#                                                                              #
################################################################################
check_deps() {
  ## Make sure commands are available

bobuss

Object Calisthenics outlines 9 basic rules to apply when performing the exercise:

• One level of indentation per method.
• Don't use the ELSE keyword.
• Wrap all primitives and Strings in classes.
• First class collections.
• One dot per line.
• Don't abbreviate.
• Keep all classes less than 50 lines.
• No classes with more than two instance variables.

getify

// NOTE: only escapes a " if it's not already escaped
function escapeDoubleQuotes(str) {
	return str.replace(/\\([\s\S])|(")/g,"\\$1$2"); // thanks @slevithan!
}

escapeDoubleQuotes(`ab`);          // ab  =>  ab           (nothing escaped)
escapeDoubleQuotes(`a"b`);         // a"b  =>  a\"b
escapeDoubleQuotes(`a\\"b`);       // a\"b  =>  a\"b       (nothing escaped)
escapeDoubleQuotes(`a\\\\"b`);     // a\\"b  =>  a\\\"b
escapeDoubleQuotes(`a\\\\\\"b`);   // a\\\"b  =>  a\\\"b   (nothing escaped)

decebal

if($_SERVER['REMOTE_ADDR'] == '86.120.211.231'){
    ini_set("display_errors", 'On');
error_reporting(E_ALL ^ E_NOTICE);
}else{
    ini_set("display_errors", 'Off');
}

kylebgorman

#!/usr/bin/env python
# Knuth-Morris-Pratt demonstration
# Kyle Gorman <kgorman@ling.upenn.edu>
#
# A naive Python implementation of a function that returns the (first) index of
# a sequence in a supersequence is the following:

def subsequence(needle, haystack):
    """
    Naive subsequence indexer; None if not found

robflaherty

<?php
/*
 * Converts CSV to JSON
 * Example uses Google Spreadsheet CSV feed
 * csvToArray function I think I found on php.net
 */

header('Content-type: application/json');

// Set your CSV feed