P340

利用Python实现Web爬虫 文档

Web Scraping with Python。从现代Web站点采集数据。Want to unlimited data from any web source, in any format? Automated gathering and manipulation of data from across the web helped launch Facebook in its early days, and is the foundation of Google's search engine today. With this book, you’ll learn how to gather unlimited data from any web source and use it for your own studies or web applications.<br> Web scraping is a technology nearly as old as the web itself, but the techniques used must keep pace with web technologies in order to remain viable. Web Scraping with Python not only teaches you the basics of web scraping, but also gets you up to speed on cutting-edge security and technology considerations in one comprehensive guide.

enene 2015-07-08   1683   0
P32

【试读】《Python 数据分析基础教程:NumPy学习指南(第2版)》 文档

本书是 NumPy 的入门教程,主要介绍 NumPy 以及相关的 Python 科学计算库,如 SciPy 和 Matplotlib。 本书内容涵盖 NumPy 安装、数组对象、常用函数、矩阵运算、线性代数、金融函数、窗函数、质量控制、 Matplotlib 绘图、SciPy 简介以及 Pygame 等内容,涉及面较广。另外,Ivan Idris 针对每个知识点给出了简 短而明晰的示例,并为大部分示例给出了实用场景(如股票数据分析) ,在帮助初学者入门的同时,提高了

enene 2015-07-08   729   0
P61

Py的奇幻漂流 - Python源代码阅读笔记 文档

Py 的奇幻漂流 - Python 源代码阅读笔记 。Python 的学习笔记,基于 2.7.3,主要记录 Python 诧言的要点,没按照一定的逻辑来写。 Python 对象头大致由四个成员组成,第一个成员(上图中的灰色框) 是一个双向链表, 用于跟踪所有的 Python 对象,这是一个可选成员,在启用 Python 调试时存在。第二个成 员为引用计数,用于跟踪对象的使用情冴,当引用计数减为零时,对象将会被垃圾管理器释 放。第三个成员为对象类型,这个成员指明了对象的类型。

yushang 2015-07-02   466   0
P32

Python老兵眼中的golang 文档

关于我•潘俊勇,老潘•沙龙潜水组委•易度云办公everydo.com•微博:@panjunyong我的语言之路•VC/C++Builder:客户端应用时代•PowerBuilder:数据库应用时代•Java:web应用时代•Python(2002年起)web2.0时代•?互联网云计算时代–开放API–实时–全端–大访问量

mpm4 2015-07-01   658   0
P380

廖雪峰Python教程和git教程 文档

Python是一种计算机程序设计语言。你可能已经听说过很多种流行的编程语言,比如非常难学的C 语言,非常流行的Java语言,适合初学者的Basic语言,适合网页编程的JavaScript语言,等等。

madmadcat 2015-06-30   26643   0
Python  
P0

Python Matplotlib 文档 文档

matplotlib is a library for making 2D plots of arrays in Python. Although it has its origins in emulating the MATLAB 1 graphics commands, it is independent of MATLAB, and can be used in a Pythonic, object oriented way. Although matplotlib is written primarily in pure Python, it makes heavy use of NumPy and other extension code to provide good performance even for large arrays.<br> matplotlib is designed with the philosophy that you should be able to create simple plots with just a few commands, or just one! If you want to see a histogram of your data, you shouldn’t need to instantiate objects, call methods, set properties, and so on; it should just work.

cgm1120 2015-06-26   923   0
P11

  python做get和post请求 文档

上海大熊HTTP请求HTTP协议(HyperTextTransferProtocol,超文本传输协议)是用于从WWW服务器传输超文本到本地浏览器的传输协议。HTTP/1.1 当前版本。持久连接被默认采用,并能很好地配合代理服务器工作。还支持以管道方式同时发送多个请求,以便降低线路负载,提高传输速度。HTTP/2.0 Python我的环境服务端:GO语言1.4 Python:2.7.10数据库:MYSQL5.6HTTP请求GET通过请求URI得到资源POST用于添加新的内容PUT用于修改某个内容DELETE,删除某个内容实例HttplibUrllib2加密对称加密非对称加密对称加密采用单钥密码系统的加密方法,同一个密钥可以同时用作信息的加密和解密,这种加密方法称为对称加密,也称为单密钥加密。DES、3DES、TDEA、Blowfish、RC2、RC4、RC5、IDEA、SKIPJACK、AES等。非对称加密非对称加密算法需要两个密钥来进行加密和解密,这两个秘钥是公开密钥(publickey,简称公钥)和私有密钥(privatekey,简称私钥)。

diaojun 2015-06-23   1044   0
P5

Why Python Rocks for Research 文档

MATLAB’s language design is focused on matrix and linear algebra!operations; for turning such equations into one-liners, it is pretty!much unsurpassed. However, move beyond these operations and it often!becomes an exercise in frustration. R is beautiful for interactive!data analysis, and its open library of statistical pack- ages is!amazing. However, the language design can be unnatural, and even!maddening, for larger development projects. While Mathematica is!perfect for interactive work with pure math, it is not intended for!general purpose coding.

cen 2015-06-21   2527   0
P272

Learn Python The Hard Way, 3ed, 2014 文档

A Very Simple Introduction to the Terrifyingly Beautiful World of Computers and Code。This simple book is meant to get you started in programming. The title says it’s the hard way to learn to write code, but it’s actually not. It’s only the “hard” way because it uses a technique called instruction. Instruction is where I tell you to do a sequence of controlled exercises designed to build a skill through repetition. This technique works very well with beginners who know noth- ing and need to acquire basic skills before they can understand more complex topics. It’s used in everything from martial arts to music to even basic math and reading skills.

dpnclp 2015-06-10   403   0
P29

  pysquoiadb 异步化实践.pptx 文档

为什么要异步化?为什么要异步化?为什么要异步化?更少的线程,更好的IO性能。对计算操作和I/O处理进行重叠处理的能力利用了处理速度与I/O速度之间的差异。当一个或多个I/O请求挂起时,CPU可以执行其他任务;在发起其他I/O的同时对已经完成的I/O进行操作。

b2f5 2015-06-10   424   0
HTTP   Java   JavaScript   Python   C/C++  
P300

Programming Computer Vision with Python 文档

Python is the programming language used in the code examples throughout this book. Python is a clear and concise language with good support for input/output, numerics, images and plotting. The language has some peculiarities such as indentation and compact syntax that takes getting used to. The code examples assume you have Python 2.6 or later as most packages are only available for these versions. The upcoming Python 3.x version has many language differences and is not backward compatible with Python 2.x or compatible with the ecosystem of packages we need (yet).

lvguohong 2015-06-10   3860   0
P306

Learn Python the Hard Way, 3ed, 2014 文档

This book instructs you in Python by slowly building and establishing skills through techniques like practice and memorization, then applying them to increasingly diffi cult problems. By the end of the book, you will have the tools needed to begin learning more complex programming topics. I like to tell people that my book gives you your “programming black belt.” What this means is that you know the basics well enough to now start learning programming.

dpnclp 2015-06-09   2581   0
P236

笨办法学Python(Learn Python The Hard Way) 文档

《笨办法学 Python》(Learn Python The Hard Way,简称 LPTHW)是 Zed Shaw 编写的一本 Python 入门书籍。适合对计算机了解不多,没有学过编程, 但对编程感兴趣的朋友学习使用。这本书以习题的方式引导读者一步一步学习编 程,从简单的打印一直讲到完整项目的实现。也许读完这本书并不意味着你已经 学会了编程,但至少你会对编程语言以及编程这个行业有一个初步的了解。 本书结构非常简单,其实就是 52 个习题。其中 26 个覆盖了输入输出、变量、 以及函数三个课题,另外 26 个覆盖了一些比较高级的话题,如条件判断、循 环、类和对象、代码测试、以及项目的实现等。每一章节的格式基本都是一样的, 以代码练习题开始,读者照着说明编写代码(不允许复制粘贴),运行并检查结 果,然后再做一下加分习题就可以了。当然如果你觉得加分习题对你来说有点难, 你也可以暂时跳过,以后再完成也没关系。

dpnclp 2015-06-09   1555   0
P29

  Grails Java 开发人员的圣杯 文档

JAVA开发人员的圣杯Java的困惑对于在Java领域中开发的web程序员来说,一直梦想有个无须太多配置的Web应用框架,能够帮助我们直接来完成业务逻辑的处理,而无须了解太多堆积如山的配置文件。

dongbei 2015-06-09   410   0
Groovy   Java开发   Java   Python   Ruby  
P6

Sorting HOW TO - Python 2.7 文档

Python lists have a built-in list.sort() method that modifies the list in-place. There is also a sorted() built-in function that builds a new sorted list from an iterable. In this document, we explore the various techniques for sorting data using Python.

dajunx 2015-06-08   1391   0
P43

贝叶斯思维:统计建模的Python学习法(迷你书) 文档

这本书帮助那些希望用数学工具解决实际问题的人们,仅有的要求可能就是懂一点概率知识和程序设计。而贝叶斯方法是一种常见的利用概率学知识去解决不确定性问题的数学方法,对于一个计算机专业的人士,应当熟悉其应用在诸如机器翻译,语音识别,垃圾邮件检测等常见的计算机问题领域。<br> 可是本书实际上会远远扩大你的视野,即使不是一个计算机专业的人士,你也可以看到在战争环境下(二战德军坦克问题),法律问题上(肾肿瘤的假设验证),体育博彩领域(棕熊队和加人队NFL比赛问题)贝叶斯方法的威力。怎么从有限的信息判断德军装甲部队的规模,你所支持的球队有多大可能赢得冠军,在《龙与地下城》勇士中,你应当对游戏角色属性的最大值有什么样的期望,甚至在普通的彩弹射击游戏中,拥有一些贝叶斯思维也能帮助到你提高游戏水平。

ngmm 2015-06-07   444   0
P244

Python for Informatics Exploring Information 文档

I never seemed to find the perfect data-oriented Python book for my course, so I set out to write just such a book. Luckily at a faculty meeting three weeks before I was about to start my new book from scratch over the holiday break, Dr. Atul Prakash showed me the Think Python book which he had used to teach his Python course that semester. It is a well-written Computer Science text with a focus on short, direct explanations and ease of learning.

shelton88 2015-06-03   3862   0
P42

Python Hack 文档

一、关于Python 2.模块加载顺序竞争 3. Python中的Web攻击*当服务器支持Python,可以对上传在web目录中的 Python文件进行解释时,Python版的Webshell就 得以执行。

1140021222 2015-06-02   477   0
P20

  OpenERP二次开发技术培训 Day 5 文档

Qweb是OpenERP使用的XML模板引擎,一般用来生成HTML对于二次开发来说,Qweb一般用来开发报表使用Qweb写报表使用wkhtmltopdf将html转换为pdf将Qweb渲染为HTML报表开发想要开发一个报表,需要以下部分一个report标签的报表声明一个template标签的Qweb模板声明重载report_sxw.rml_parse类,使得在Qweb模板中使用函数重载osv.AbstractModel类来将report_sxw.rml_parse和如果不需要再Qweb中使用函数,可以不写报表声明向系统声明一个报表

1140021222 2015-06-02   3355   0
ERP/CRM   培训   HTML   Python   XML  
P30

  OpenERP二次开发 DAY 2 文档

需要一个课程持续时间字段课程天数和人数都不能为0显示报名精度和剩余席位课程需要存在不同的状态审批开始后日期不能修改可以在日历上看培训计划,能够按照科目分组和搜索新的需求?约束条件?约束条件是指在OpenERP中输入一条记录的时候检查数据的完整性和有效性Python约束:_constraints属性来定义一个OpenERP系统内部的约束数据库约束

1140021222 2015-06-02   2438   0
ERP/CRM   培训   Python  
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