Python 有权重的随机选择， Weighted Random Choice
import random def windex(lst):
'''an attempt to make a random.choose() function that makes weighted choices
accepts a list of tuples with the item and probability as a pair'''
wtotal = sum([x[1] for x in lst])
n = random.uniform(0, wtotal)
for item, weight in lst:
if n < weight:
break
n = n - weight
return item
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赖勇浩（http://laiyonghao.com）
今天（2009年5月31日） OurPNP.org 搞了个聚会活动，弄了十几二十个人在广州海珠广场的堂会呆了五个小时，创下了我在 K 房呆的最长时间纪录。应他们的邀请，我做了个题为《用 python 快速搭建网游服务器》的小演讲，因为那边的电视竟然不能接电脑，所以讲的时候没有能够参照 PPT 来讲，观 ......
python 中的re 模块
正则表达式
就个人而言，主要用它来做一些复杂字符串分析，提取想要的信息
学习原则：够用就行，需要的时候在深入
现总结如下：
正则表达式中特殊的符号：
“.” 表任意字符
“^ ” 表string起始
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This module constructs higher-level threading interfaces on top of the lower level _thread module. See also the queue module.
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......
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Introduction
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