rense

export MY_HOSTNAME=foobar; for n in LocalHostName ComputerName HostName; do sudo scutil --set $n $MY_HOSTNAME; done

rense

_validator_module = 'django.contrib.auth.password_validation'

AUTH_PASSWORD_VALIDATORS = [
    {'NAME': '%s.UserAttributeSimilarityValidator' % _validator_module},
    {'NAME': '%s.MinimumLengthValidator' % _validator_module},
    {'NAME': '%s.CommonPasswordValidator' % _validator_module},
    {'NAME': '%s.NumericPasswordValidator' % _validator_module},
]

rense

foo = ["foe", "jong", "hai", 'sambal', 'bij']

for x in range(len(foo) + 1):
    bar = foo[x:]
    while len(bar):
        print('.'.join(bar))
        _ = bar.pop()

rense

import sys
from django.conf import settings

settings.configure(
    DEBUG=True,
    SECRET_KEY='thisisthesecretkey',
    ROOT_URLCONF=__name__,
    MIDDLEWARE_CLASSES=(
        'django.middleware.common.CommonMiddleware',
        'django.middleware.csrf.CsrfViewMiddleware',

rense

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]:

rense

cd `brew --prefix`
git remote add origin https://github.com/mxcl/homebrew.git
git fetch origin
git reset --hard origin/master

rense

def sieve(limit):
    limit += 1
    primes = []
    a = [True] * limit
    a[0] = a[1] = False
    for (i, prime) in enumerate(a):
        if not prime:
            continue
        primes.append(i)

rense

<?xml version="1.0" encoding="utf-8"?>
<Clients>
	<Client name="UPC Horizon">
		<!-- Samsung SMT-G7400, the UPC Horizon -->
		<!-- Author: Rense VanderHoek -->
		<!-- DLNA Test Certificate: http://certification.dlna.org/certs/REG47816707.pdf -->
		<Identification>
			<Header name="User-Agent" substring="Linux/2.6.35 UPnP/1.0 NDS_MHF DLNADOC/1.50"/>
			<DeviceDescription type="urn:schemas-upnp-org:device:MediaServer:1">
				<FriendlyName substring="UPC Horizon"/>