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# lib/custom_logger.rb
class CustomLogger < Logger
  def format_message(severity, timestamp, progname, msg)
    "#{timestamp.to_formatted_s(:db)} #{severity} #{msg}\n"
  end
end

logfile = File.open("#{Rails.root}/log/custom.log", 'a')  # create log file
logfile.sync = true  # automatically flushes data to file
CUSTOM_LOGGER = CustomLogger.new(logfile)  # constant accessible anywhere

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  def self.dedupe
    # find all models and group them on keys which should be common
    grouped = all.group_by{|model| [model.title,model.info,model.address,model.phone] }
    grouped.values.each do |duplicates|
      # the first one we want to keep right?
      first_one = duplicates.shift # or pop for last one
      # if there are any more left, they are duplicates
      # so delete all of them
      duplicates.each{|double| double.destroy} # duplicates can now be destroyed
    end

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require 'curb'
require "json"
require "base64"
require "net/http"
require "uri"

CUID = "8132533";
CLIENT_ID = "your_client_id";
CLIENT_SECRET = "your_client_secret";

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#config/initializers/redis.rb
require 'redis'
require 'redis/objects'

REDIS_CONFIG = YAML.load( File.open( Rails.root.join("config/redis.yml") ) ).symbolize_keys
dflt = REDIS_CONFIG[:default].symbolize_keys
cnfg = dflt.merge(REDIS_CONFIG[Rails.env.to_sym].symbolize_keys) if REDIS_CONFIG[Rails.env.to_sym]

$redis = Redis.new(cnfg)
Redis::Objects.redis = $redis

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module RequestHelper
  def json_response
    JSON.parse(response.body, symbolize_names: true)
  end
end

class ActionDispatch::IntegrationTest
  include RequestHelper
end

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require_relative 'boot'
require 'csv'
require 'rails/all'

# Require the gems listed in Gemfile, including any gems
# you've limited to :test, :development, or :production.
Bundler.require(*Rails.groups)

module Giant
  class Application < Rails::Application

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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]:

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Rails naming conventions

General Ruby conventions

Class names are CamelCase.

Methods and variables are snake_case.

Methods with a ? suffix will return a boolean.

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{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {

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#! /bin/bash

export RUN_AS='ubuntu';
export INSTALL_DIR='/var/www/sentry';
HOSTNAME='http://mysentry.example.com'; # No trailing slash
DB_HOST='something.rds.amazonaws.com';
DB_PORT='5432';
DB_USER='sentry';
DB_NAME='sentry';
DB_PASSWORD='DB_PASSWORD';