import pandas as pdhousing = pd.read_csv("housing.csv")housing.plot(kind="scatter", x="longitude", y="latitude", alpha=0.4, s=housing["population"]/100, label="population", figsize=(10,7),c="median_ho

#!/usr/bin/python# -*- coding: utf-8 -*-'''Created on 2015-1-26@author: beyondzhou@name: linkPolynomail.py'''# Implementation of the Polynomial ADT using a sorted linked listclass linkPolyn

正则表达式：

1. 1 to C (1 to 12: hour or month)^[1-9a-cA-c]$2. 1 to 18 (1 to 24: hour)^(1[0-8]|[1-9a-fA-F])$3. 1 to 1F (1 to 31: day of the month)^(1[0-9a-fA-F]|[1-9a-fA-F])$4. 1 to 35 (1 to 53: week of t

Regular Expression\bcat\b

新浪微博数据挖掘食谱之九： 用户篇 (获取转发微博的用户名)

1. 读取原始数据html = urlopen(url).read()2. 数据清洗raw = nltk.clean_html(html)3. 数据切片raw = raw[111:2222222]4. 数据分词tokens = nltk.wordpunct_tokenize(raw)5. 分词切片tokens = tokens[2

1.概要金融领域交通领域医疗领域零售领域工业领域农业领域司法领域物流领域2.详情待续

1. 读取原始数据html = urlopen(url).read()2. 数据清洗raw = nltk.clean_html(html)3. 数据切片raw = raw[111:2222222]4. 数据分词tokens = nltk.wordpunct_tokenize(raw)5. 分词切片tokens = tokens[2

#! /usr/bin/env pythonfrom operator import add, subfrom random import randint, choiceops = {'+': add, '-': sub}MAXTRIES = 2def doprob():op = choice('+-')nums = [randint(1,10) for i i