dirkakrid

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

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]:

Description

OpenELEC runs Kodi, an award-winning free and open source (GPL) software media player and entertainment hub for digital media. For more info see http://kodi.tv . The base system has been designed and built from the ground up to be as efficient as possible – consuming only tiny disk and memory footprints and providing cutting edge hardware support to deliver a set-top box experience.

In order to run software above the base OpenELEC distribution with minimal impact to the OpenELEC base, one alternative is to use a container.

I have chosen to use systemd-nspawn instead of chroot. There are really no downsides as long as you can configure the required kernel config options and have a basic working knowledge of systemd.

Installation

	# -- coding: utf-8 --
	"""
	Created on Fri Jun 26 13:16:22 2015

	@author: zah
	"""

	import multiprocessing

	import logging

	"""
	remconsole.py

	A Python console you can embed in a program and attach to remotely.

	To spawn a Python console in a script do the following in any scope
	of any module:

	import remconsole
	remconsole.spawn_server()

	import os
	import sys
	import traceback
	from functools import wraps
	from multiprocessing import Process, Queue


	def processify(func):
	'''Decorator to run a function as a process.
	Be sure that every argument and the return value

	from multiprocessing import Pool
	from itertools import chain

	import re
	import sys

	PROC_COUNT = 8
	LINES_PER_PROC = 40

	if len(sys.argv) != 3:

	from microbit import *

	networkID = 0 # Change the channel variable in the radio.configure to this

	def selectNetwork(): # Call this function before calling anything else
	global networkID
	currentID = networkID
	while True:
	if button_a.is_pressed() and button_b.is_pressed():
	networkID = currentID

	# `ref: https://fangpenlin.com/posts/2012/08/26/good-logging-practice-in-python/


	import logging

	logger = logging.getLogger(__name__)
	logger.setLevel(logging.INFO)

	# create a file handler
	handler = logging.FileHandler('hello.log')

	#!/bin/bash

	TOOLBOX_DOCKER_IMAGE=$1
	TOOLBOX_USER=root

	machinename=$(echo "${USER}-${TOOLBOX_DOCKER_IMAGE}" \| sed -r 's/[^a-zA-Z0-9_.-]/_/g')
	machinepath="/var/lib/toolbox/${machinename}"

	if [ ! -d ${machinepath} ] \|\| systemctl is-failed ${machinename} ; then
	sudo mkdir -p "${machinepath}"