leingang

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The Best of the Best Practices (BOBP) Guide for Python

A "Best of the Best Practices" (BOBP) guide to developing in Python.

In General

Values

"Build tools for others that you want to be built for you." - Kenneth Reitz
"Simplicity is alway better than functionality." - Pieter Hintjens

This can reduce files to ~15% of their size (2.3M to 345K, in one case) with no obvious degradation of quality.

ghostscript -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf

Other options for PDFSETTINGS:

/screen selects low-resolution output similar to the Acrobat Distiller "Screen Optimized" setting.
/ebook selects medium-resolution output similar to the Acrobat Distiller "eBook" setting.
/printer selects output similar to the Acrobat Distiller "Print Optimized" setting.
/prepress selects output similar to Acrobat Distiller "Prepress Optimized" setting.

Usage

osascript Start.applescript "objective" "tag1,tag2"
osascript Stop.applescript

I have skipped most Vitamin-R workflows. See the attached settings snapshot. If you have them enabled, you need to update the script to handle different steps.

I use the scripts in my org pomodoro script

	local ffi = require"ffi"

	ffi.cdef[[
	// Cairo types
	typedef struct _cairo_surface cairo_surface_t;
	typedef int cairo_status_t;
	typedef struct _cairo cairo_t;

	// Poppler types
	typedef struct _PopplerPage PopplerPage;

	#!/usr/bin/env python

	import argparse, sys, markdown

	TEMPLATE = """<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
	<meta name="referrer" content="no-referrer" />
	<meta name="referrer" content="unsafe-url" />

	from flask import Flask, render_template_string
	from flask_wtf import Form
	from wtforms import StringField
	from wtforms.widgets import html_params, HTMLString

	app = Flask(__name__)
	app.secret_key = 'SHH!'


	class ButtonWidget(object):

	#!/bin/bash

	# Might as well ask for password up-front, right?
	sudo -v

	# Keep-alive: update existing sudo time stamp if set, otherwise do nothing.
	while true; do sudo -n true; sleep 60; kill -0 "$$" \|\| exit; done 2>/dev/null &

	# Example: do stuff over the next 30+ mins that requires sudo here or there.
	function wait() {

	from itertools import chain

	def parse_range(rng):
	parts = rng.split('-')
	if 1 > len(parts) > 2:
	raise ValueError("Bad range: '%s'" % (rng,))
	parts = [int(i) for i in parts]
	start = parts[0]
	end = start if len(parts) == 1 else parts[1]
	if start > end: