This book offers a highly accessible introduction to Natural Language Processing, the field that underpins a variety of language technologies, ranging from predictive text and email filtering to automatic summarization and translation. With Natural Language Processing with Python, you’ll learn how to write Python programs to work with large collections of unstructured text. You’ll access richly-annotated datasets using a comprehensive range of linguistic data structures. And you’ll understand the main algorithms for analyzing the content and structure of written communication. Packed with examples and exercises, Natural Language Processing with Python will help you:

Extract information from unstructured text, to guess the topic or identify “named entities” Analyze linguistic structure in text, including parsing and semantic analysis Access popular linguistic databases, including WordNet and treebanks Integrate techniques drawn from fields as diverse as linguistics and artificial intelligence

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Beginning Python Visualization: Crafting Visual Transformation Scripts

Product Description

We are visual animals. But before we can see the world in its true splendor, our brains, just like our computers, have to sort and organize raw data, and then transform that data to produce new images of the world. Beginning Python Visualization: Crafting Visual Transformation Scripts talks about turning many types of small data sources into useful visual data. And you will learn Python as part of the bargain.

What you’ll learn

• Write ten lines of code and present visual information instead of data soup.
• Set up an open source environment ready for data visualization.
• Forget Excel: use Python.
• Learn numerical and textual processing.
• Draw graphs and plots based on textual and numerical data.
• Learn how to deal with images.

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Python is an ideal language for solving problems, especially in Linux
and Unix networks. With this pragmatic book, administrators can review
various tasks that often occur in the management of these systems, and
learn how Python can provide a more efficient and less painful way to
handle them. Each chapter in Python for Unix and Linux System
Administration presents a particular administrative issue, such as
concurrency or data backup, and presents Python solutions through
hands-on examples. (more…)

Whether you’re building GUI prototypes or full-fledged cross-platform GUI applications with native look-and-feel, PyQt 4 is your fastest, easiest, most powerful solution. Qt expert Mark Summerfield has written the definitive best-practice guide to PyQt 4 development.
With Rapid GUI Programming with Python and Qt you’ll learn how to build efficient GUI applications that run on all major operating systems, including Windows, Mac OS X, Linux, and many versions of Unix, using the same source code for all of them. Summerfield systematically introduces every core GUI development technique: from dialogs and windows to data handling; from events to printing; and more. Through the book’s realistic examples you’ll discover a completely new PyQt 4-based programming approach, as well as coverage of many new topics, from PyQt 4’s rich text engine to advanced model/view and graphics/view programming. Every key concept is illuminated with realistic, downloadable examples—all tested on Windows, Mac OS X, and Linux with Python 2.5, Qt 4.2, and PyQt 4.2, and on Windows and Linux with Qt 4.3 and PyQt 4.3.

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In 2005, Microsoft quietly announced an initiative to bring dynamic languages to the .NET platform. The starting point for this project was a .NET implementation of Python, dubbed IronPython. After a couple years of incubation, IronPython is ready for real-world use. It blends the simplicity, elegance, and dynamism of Python with the power of the .NET framework.

IronPython in Action offers a comprehensive, hands-on introduction to Microsoft’s exciting new approach for programming the .NET framework. It approaches IronPython as a first class .NET language, fully integrated with the .NET environment, Visual Studio, and even the open-source Mono implementation. You’ll learn how IronPython can be embedded as a ready-made scripting language into C# and VB.NET programs, used for writing full applications or for web development with ASP. Even better, you’ll see how IronPython works in Silverlight for client-side web programming.

IronPython opens up exciting new possibilities. Because it’s a dynamic language, it permits programming paradigms not easily available in VB and C#. In this book, authors Michael Foord and Christian Muirhead explore the world of functional programming, live introspection, dynamic typing and duck typing , metaprogramming, and more.

IronPython in Action explores these topics with examples, making use of the Python interactive console to explore the .NET framework with live objects. The expert authors provide a complete introduction for programmers to both the Python language and the power of the .NET framework. The book also shows how to extend IronPython with C#, extending C# and VB.NET applications with Python, using IronPython with .NET 3.0 and Powershell, IronPython as a Windows scripting tool, and much more.

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Python is an agile, robust, expressive, fully object-oriented, extensible, and scalable programming language. It combines the power of compiled languages with the simplicity and rapid development of scripting languages. In Core Python Programming, Second Edition, leading Python developer and trainer Wesley Chun helps you learn Python quickly and comprehensively so that you can immediately succeed with any Python project.

Using practical code examples, Chun introduces all the fundamentals of Python programming: syntax, objects and memory management, data types, operators, files and I/O, functions, generators, error handling and exceptions, loops, iterators, functional programming, object-oriented programming and more. After you learn the core fundamentals of Python, he shows you what you can do with your new skills, delving into advanced topics, such as regular expressions, networking programming with sockets, multithreading, GUI development, Web/CGI programming and extending Python in C.

This edition reflects major enhancements in the Python 2.x series, including 2.5 as well as capabilities set for future versions. It contains new chapters on database and Internet client programming, plus coverage of many new topics, including new-style classes, Java and Jython, Microsoft Office (Win32 COM Client) programming, and much more.

* Learn professional Python style, best practices, and good programming habits
* Gain a deep understanding of Python’s objects and memory model as well as its OOP features, including those found in Python’s new-style classes
* Build more effective Web, CGI, Internet, and network and other client/server applications
* Learn how to develop your own GUI applications using Tkinter and other toolkits available for Python
* Improve the performance of your Python applications by writing extensions in C and other languages, or enhance I/O-bound applications by using multithreading
* Learn about Python’s database API and how to use a variety of database systems with Python, including MySQL, Postgres, and SQLite

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Beginning Python Visualization: Crafting Visual Transformation Scripts

Product Description

We are visual animals. But before we can see the world in its true splendor, our brains, just like our computers, have to sort and organize raw data, and then transform that data to produce new images of the world. Beginning Python Visualization: Crafting Visual Transformation Scripts talks about turning many types of small data sources into useful visual data. And you will learn Python as part of the bargain.

(more…)

As two of the leading MVC web frameworks for Python, Django and
TurboGears allow you to develop and launch sites in a fraction of the
time compared to traditional techniques and they provide greater
stability, scalability, and management than alternatives. Packed with
examples, this book will help you discover a new methodology for
designing, coding, testing, and deploying rich web applications. A team
of expert authors shows you the power of MVC frameworks and the
capabilities of the TurboGears and Django packages. The Django chapters
show you how to automate production of common web development tasks,
portal creation, and content management, so you can focus on (more…)

The goal of this book is to teach computational scientists how to
develop tailored, flexible, and human-efficient working environments
built from small programs (scripts) written in the easy-to-learn,
high-level language Python. The focus is on examples and applications of
relevance to computational scientists: gluing existing applications and
tools, e.g. for automating simulation, data analysis, and visualization;
steering simulations and computational experiments; equipping old
programs with graphical user interfaces; making computational Web
applications; and creating interactive interfaces with a (more…)

Book description
In the tradition of O’Reilly’s “In a Nutshell” series, Python in a Nutshell offers Python programmers one place to look when they need help remembering or deciphering the syntax of this open source language and its many modules. This comprehensive reference guide makes it easy to look up all the most frequently needed information–not just about the Python language itself, but also the most frequently used parts of the standard library and the most important third-party extensions.
Ask any Python aficionado and you’ll hear that Python programmers have it all: an elegant language that offers object-oriented programming support, a readable, (more…)