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test:
	clear
	nosetests --with-coverage --cover-package name_utils test_name_utils.py

clean:
	find -regex '.*\.pyc' -exec rm {} \;
	find -regex '.*~' -exec rm {} \;

.PHONY: test clean

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Writing better python code

---

Swapping variables

Bad code

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// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

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# http://zh.wikipedia.org/wiki/中文数字
# http://china.younosuke.com/03_013.html

module ChineseNum
  extend self

  UPPER_ZERO = '零'
  LOWER_ZERO = '〇'
  UPPER_DIGITS = %w[壹 贰 叁 肆 伍 陆 柒 捌 玖].unshift nil
  LOWER_DIGITS = %w[一 二 三 四 五 六 七 八 九].unshift nil

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# coding: utf-8


try:
    import cPickle as pickle
except ImportError:
    import pickle
try:
    import hashlib
    sha1 = hashlib.sha1

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目标

使用 apt-mirror 来同步 hortonworks 镜像服务器上的 Ambari, HDP, HDP-UTILS 仓库, 方便本地搭建 Hadoop 集群. 适合于 Ubuntu/Debian 分支的操作系统.

参考

• Hortonworks Doc

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通过本地镜像安装 ambari

###修改 hostname

##修改 master 的 hostname
# vim /etc/hostname
master

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//Add some contstraints for good measture, constraints must be ran individually
CREATE CONSTRAINT ON (c:Customer) ASSERT c.email IS UNIQUE;
CREATE CONSTRAINT ON (p:Product) ASSERT p.uuid IS UNIQUE;

//:Start Product and customer query:

//Products, bundles and categories
CREATE (product1:Product {name: "Product 1", uuid: "d8d177cc-1542-11e5-b60b-1697f925ec7b", price: 10})
CREATE (product2:Product {name: "Product 2", uuid: "d8d17b28-1542-11e5-b60b-1697f925ec7b", price: 20})
CREATE (product3:Product {name: "Product 3", uuid: "d8d17c72-1542-11e5-b60b-1697f925ec7b", price: 30})

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from pyramid.config import Configurator
from zope.interface.registry import Components

import simplejson as json
import datetime 
import decimal

from .. import lib

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#!/bin/sh
# script to convert mysql schema to be compatible with data warehouse software
# make sure that s3cmd and maatkit utility is installed

db_name=${1:-'test'}
> /root/$db_name.txt

temppath='/mnt/data/pdump1'
host='localhost'
user='maatkit'