ziv su zivsu

Installing and running shadowsocks on Ubuntu Server

16.10 yakkety and above

Install the the shadowsocks-libev package from apt repository.
```
 sudo apt update
 sudo apt install shadowsocks-libev
```
Save ss.json as /etc/shadowsocks-libev/config.json.

Cheatsheet: pyenv, virtualenvwrapper, and pip

Installation (for Mac OS)

Install pyenv with brew

brew update
brew install pyenv

分支管理

最少有三个长期分支

master: 用于生产环境部署
testing: 用于测试环境测试
dev: 用于日常开发

有一些临时分支

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]:

#WSGI:(web server gateway interface)WEB服务器网关接口 WSGI是为python语言定义的web服务器和web应用程序或框架之间的一种简单而实用的借口。wsgi是一个web组件的接口规范，它将web组件分为三类：server，middleware，application

##wsgi server wsgi server可以理解为一个符合wsgi规范的web server，接收request请求，封装一系列环境变量，按照wsgi规范调用注册的wsgi app，最后将response返回给客户端。文字很难解释清楚wsgi server到底是什么东西，以及做些什么事情，最直观的方式还是看wsgi server的实现代码。以python自带的wsgiref为例，wsgiref是按照wsgi规范实现的一个简单wsgi server。其工作流程如下：

服务器创建socket，监听端口，等待客户端连接。
当有请求来时，服务器解析客户端信息放到环境变量environ中，并调用绑定的handler来处理请求。
handler解析这个http请求，将请求信息例如method，path等放到environ中。
wsgi handler再将一些服务器端信息也放到environ中，最后服务器信息，客户端信息，本次请求信息全部都保存到了环境变量environ中。

	# Kibana is served by a back end server. This controls which port to use.
	port: 5601

	# The host to bind the server to.
	host: "0.0.0.0"

	# The Elasticsearch instance to use for all your queries.
	elasticsearch_url: "http://10.0.4.4:9200"

	# preserve_elasticsearch_host true will send the hostname specified in `elasticsearch`. If you set it to false,

	[user]
	name = Pavan Kumar Sunkara
	email = pavan.sss1991@gmail.com
	[core]
	editor = vim
	whitespace = fix,-indent-with-non-tab,trailing-space,cr-at-eol
	excludesfile = ~/.gitignore
	[sendemail]
	smtpencryption = tls
	smtpserver = smtp.gmail.com

	// List of language tags according to RFC 5646.
	// See <http://tools.ietf.org/html/rfc5646> for info on how to parse
	// these language tags. Some duplicates have been removed.
	var RFC5646_LANGUAGE_TAGS = {
	'af': 'Afrikaans',
	'af-ZA': 'Afrikaans (South Africa)',
	'ar': 'Arabic',
	'ar-AE': 'Arabic (U.A.E.)',
	'ar-BH': 'Arabic (Bahrain)',
	'ar-DZ': 'Arabic (Algeria)',

	# Path to your oh-my-zsh configuration.
	ZSH=$HOME/.oh-my-zsh

	# Set name of the theme to load.
	# Look in ~/.oh-my-zsh/themes/
	# Optionally, if you set this to "random", it'll load a random theme each
	# time that oh-my-zsh is loaded.
	ZSH_THEME="gentoo"

	# Example aliases

	#!/usr/bin/env python
	#
	# Licensed under the Apache License, Version 2.0 (the "License"); you may
	# not use this file except in compliance with the License. You may obtain
	# a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT