Master GUI programming in Tkinter as you design, implement, and deliver ten real-world applications from start to finish About This Book Conceptualize and build state-of-art GUI applications with Tkinter Tackle the complexity of just about any size GUI application with a structured and scalable approach A project-based, practical guide to get hands-on into Tkinter GUI development Who This Book Is For Software developers, scientists, researchers, engineers, students, or programming hobbyists with basic familiarity in Python will find this book interesting and informative. People familiar with basic programming constructs in other programming language can also catch up with some brief reading on Python. No GUI programming experience is expected. What You Will Learn Get to know the basic concepts of GUI programming, such as Tkinter top-level widgets, geometry management, event handling, using callbacks, custom styling, and dialogs Create apps that can be scaled in size or complexity without breaking down the core Write your own GUI framework for maximum code reuse Build apps using both procedural and OOP styles, understanding the strengths and limitations of both styles Learn to structure and build large GUI applications based on Model-View-Controller (MVC) architecture Build multithreaded and database-driven apps Create apps that leverage resources from the network Learn basics of 2D and 3D animation in GUI applications Develop apps that can persist application data with object serialization and tools such as configparser In Detail Tkinter is the built-in GUI package that comes with standard Python distributions. It is a cross-platform package, which means you build once and deploy everywhere. It is simple to use and intuitive in nature, making it suitable for programmers and non-programmers alike. This book will help you master the art of GUI programming. It delivers the bigger picture of GUI programming by building real-world, productive, and fun applications such as a text editor, drum machine, game of chess, media player, drawing application, chat application, screen saver, port scanner, and many more. In every project, you will build on the skills acquired in the previous project and gain more expertise. You will learn to write multithreaded programs, network programs, database driven programs and more. You will also get to know the modern best practices involved in writing GUI apps. With its rich source of sample code, you can build upon the knowledge gained with this book and use it in your own projects in the discipline of your choice. Style and approach An easy-to-follow guide, full of hands-on examples of real-world GUI programs. The first chapter is a must read as it explains most of the things you need to get started with writing GUI programs with Tkinter. Each subsequent chapter is a stand-alone project that discusses some aspects of GUI programming in detail. These chapters can be read sequentially or randomly depending upon the readers experience with Python.

Build mesmerizing visualizations, analytics, and logs from your data using Elasticsearch, Logstash, and Kibana About This Book Solve all your data analytics problems with the ELK stack Explore the power of Kibana4 search and visualizations built over Elasticsearch queries and learn about the features and plugins of Logstash Develop a complete data pipeline using the ELK stack Who This Book Is For If you are a developer or DevOps engineer interested in building a system that provides amazing insights and business metrics out of data sources, of various formats and types, using the open source technology stack that ELK provides, then this book is for you. Basic knowledge of Unix or any programming language will be helpful to make the most out of this book. What You Will Learn Install, configure, and run Elasticsearch, Logstash, and Kibana Understand the need for log analytics and the current challenges in log analysis Build your own data pipeline using the ELK stack Familiarize yourself with the key features of Logstash and the variety of input, filter, and output plugins it provides Build your own custom Logstash plugin Create actionable insights using charts, histograms, and quick search features in Kibana4 Understand the role of Elasticsearch in the ELK stack In Detail The ELK stack—Elasticsearch, Logstash, and Kibana, is a powerful combination of open source tools. Elasticsearch is for deep search and data analytics. Logstash is for centralized logging, log enrichment, and parsing. Kibana is for powerful and beautiful data visualizations. In short, the Elasticsearch ELK stack makes searching and analyzing data easier than ever before. This book will introduce you to the ELK (Elasticsearch, Logstash, and Kibana) stack, starting by showing you how to set up the stack by installing the tools, and basic configuration. You’ll move on to building a basic data pipeline using the ELK stack. Next, you’ll explore the key features of Logstash and its role in the ELK stack, including creating Logstash plugins, which will enable you to use your own customized plugins. The importance of Elasticsearch and Kibana in the ELK stack is also covered, along with various types of advanced data analysis, and a variety of charts, tables ,and maps. Finally, by the end of the book you will be able to develop full-fledged data pipeline using the ELK stack and have a solid understanding of the role of each of the components. Style and approach This book is a step-by-step guide, complete with various examples to solve your data analytics problems by using the ELK stack to explore and visualize data.

A complete guide to dominating search engines with your WordPress siteAbout This BookEverything you need to get your WordPress site to the top of search engines and bring thousands of new customers to your blog or businessLearn everything from keyword research and link building to customer conversions, in this complete guidePacked with real-word examples to help get your site noticed on Google, Yahoo, and Bing Who This Book Is For This book is for anyone who runs any of the over 90,000,000 WordPress installations throughout the world. If you can login to your WordPress website, you can implement most of the tips in this book without any coding experience.What You Will LearnThe elements that search engines use to rank websites—and how to optimize your site for premium placementHarness social media sites to extend the reach of your site and gain more visitorsDiscover the high-volume, high-value search phrases that customers use when searching for your products or servicesAvoid dangerous black-hat optimization techniques and the people who advocate and purvey themBuild high-quality, high-value links from other websites to raise your rankings in search enginesCreate optimized and engaging content that both search engines and readers will loveAvoid common SEO mistakes that can get your site penalized by search engines In Detail WordPress is a powerful platform for creating feature-rich and attractive websites but, with a little extra tweaking and effort, your WordPress site can dominate search engines and bring thousands of new customers to your business. WordPress Search Engine Optimization will show you the secrets that professional SEO companies use to take websites to the top of search results. You'll take your WordPress site to the next level; you'll brush aside even the stiffest competition with the advanced tutorials in this book.Style and approach This is a practical, hands-on book based around sound SEO techniques specifically applied to WordPress. Each chapter starts with a brief overview of the important concepts then quickly moves into practical step-by-step actions you can take immediately. Throughout the book, you'll get clear instructions and detailed screenshots, so you can see exactly what to do each step of the way.

Unleash the true potential of Ubuntu Server in your production environment using this administration guide About This Book Learn how to deploy and configure Ubuntu servers and work with cloud and hyper-visors Optimize network traffic to broadcast and multicast the traffic flow in OpenStack clouds Discover the essentials of the latest version of Ubuntu, which are good in both looks and performance, using this fast-paced guide Who This Book Is For This book is for system administrators who are familiar with the fundamentals of the Linux operating system and are looking for a fast-paced guide on Ubuntu, and those who are familiar with the older versions of Ubuntu and want to get up to scratch. Basic knowledge of Linux administration is assumed. What You Will Learn Install and set up Ubuntu Server in the shortest possible time, manually as well as in an automated way, for a single server or hundreds of servers Discover the fundamentals of the Ubuntu command-line interface Configure and administer Ubuntu Server using networking and CLI Deploy servers on Ubuntu in the simplest and fastest ways Enhance security within Ubuntu Server using tools such as firewalls, IDS, and IPS and procedures such as restore, rescue, and recovery Work with virtualization, clouds, and one of the best in open source cloud computing —OpenStack Optimize CLI for grep and exec commands and gain some best tips and tricks for Ubuntu Server administration In Detail Ubuntu is a Debian-based Linux operating system built on top of the Debian architecture. It is used to make operating systems for multiple platforms, including phones, desktops, TVs and mobiles. It has made some serious progress in the realms of efficiency and user friendliness. With evolving technology trends, demands on software have changed, with more and more skilled users. Over the past few years, services such as Facebook, Twitter, and push notifications on smartphones mean that users are used to being up to date with everything that happens all the time. With SignalR, the applications stay connected and will generate notifications when something happens either from the system or by other users. This provides new opportunities for the system administrators, to enter this new and exciting world of real-time application development. This is a concise and a cost-friendly guide, packed with up-to-date essentials on Ubuntu Server fundamentals. It will guide you through deploying and configuring Ubuntu servers in your office environments. You’ll start by installing Ubuntu Server, then move to the most useful aspect —the command-line interface inside it. You’ll extend your knowledge by learning how to administrate and configure Ubuntu Server. You will also see how to deploy services on Ubuntu Server and find out how to secure it. You’ll get to grips with the virtualization and cloud computing facilities provided by Ubuntu, and finally, you’ll gain some very useful tips. Style and approach This concise and easy-to-follow guide follows a step-by-step approach to help you master Ubuntu server, no matter what your level of expertise it. Each topic is explained sequentially with both essential information and whenever needed, in-depth references.

Wield the power of OpenStack Neutron networking to bring network infrastructure and capabilities to your cloud About This Book This completely up-to-date edition will show you how to deploy a cloud on OpenStack using community-driven processes. It includes rich examples that will help you understand complex networking topics with ease Understand every aspect of designing, creating, customizing, and maintaining the core network foundation of an OpenStack cloud using OpenStack Neutron all in one book Written by best-selling author James Denton, who has more than 15 years of experience in system administration and networking. James has experience of deploying, operating, and maintaining OpenStack clouds and has worked with top enterprises and organizations Who This Book Is For If you are an OpenStack-based cloud operator and administrator who is new to Neutron networking and wants to build your very own OpenStack cloud, then this book is for you. Prior networking experience and a physical server and network infrastructure is recommended to follow along with concepts demonstrated in the book. What You Will Learn Architect and install the latest release of OpenStack on Ubuntu Linux 14.04 LTS Review the components of OpenStack networking, including plugins, agents, and services, and learn how they work together to coordinate network operations Build a virtual switching infrastructure using reference architectures based on ML2 + Open vSwitch or ML2 + LinuxBridge Create networks, subnets, and routers that connect virtual machine instances to the network Deploy highly available routers using DVR or VRRP-based methods Scale your application with haproxy and Load Balancing as-a-Service Implement port and router-level security using Security Groups and Firewall as-a-Service Provide connectivity to tenant networks with Virtual Private Networking as-a-Service (VPNaaS) Find out how to manage OpenStack networking resources using CLI and GUI-driven methods In Detail OpenStack Neutron is an OpenStack component that provides networking as a service for other OpenStack services to architect networks and create virtual machines through its API. This API lets you define network connectivity in order to leverage network capabilities to cloud deployments. Through this practical book, you will build a strong foundational knowledge of Neutron, and will architect and build an OpenStack cloud using advanced networking features. We start with an introduction to OpenStack Neutron and its various components, including virtual switching, routing, FWaaS, VPNaaS, and LBaaS. You’ll also get hands-on by installing OpenStack and Neutron and its components, and use agents and plugins to orchestrate network connectivity and build a virtual switching infrastructure. Moving on, you’ll get to grips with the HA routing capabilities utilizing VRRP and distributed virtual routers in Neutron. You’ll also discover load balancing fundamentals, including the difference between nodes, pools, pool members, and virtual IPs. You’ll discover the purpose of security groups and learn how to apply the security concept to your cloud/tenant/instance. Finally, you'll configure virtual private networks that will allow you to avoid the use of SNAT and floating IPs when connecting to remote networks. Style and approach This easy-to-follow guide on networking in OpenStack follows a step-by-step process to installing OpenStack and configuring the base networking components. Each major networking component has a dedicated chapter that will build on your experience gained from prior chapters.

Two years ago, the ash started falling like gray snow. The volcanoes had erupted. . . .For Miles and his sister, Sarah, the real disaster started in the violent aftermath—when they were forced to leave their cushy suburban home and flee to the north woods for safety. Miles got them to a cabin, but now winter is setting in. All they have to get them through is the milk from Sarah’s prized possession—her goat—and Miles’s memory of wilderness survival skills.When Sarah tries to regain some normalcy by attending the local school, she realizes she is no longer quite the person she used to be. Now she is Goat Girl, a Traveler, and it’s hard to pretend she isn’t. And when a horrific twist of fate robs Miles of his memory, he discovers the heart of his true identity. They knew the volcanoes would change the world. Now, in order to survive, they must change with it.Will Weaver delivers an extraordinary sequel to Memory Boy, showing that several basic instincts lie deep inside us all: love, fear, and survival.

Prohibition is a big headache for some . . . and a big payday for others, the fearless entrepreneurs with little respect for the law of the land. With $125,000 worth of Kentucky's finest homemade whiskey in his possession, big, hell-raising Son Martin counts himself among the latter. Son knows having this much illegal hooch makes him a very tasty target, but nobody's going to steal it from him. Ware may be coming to his backyard, but Son's not worried. Because when it comes to fighting, shooting, and keeping one step ahead of the Big Boys, he's more than good—he's bad . . . and dangerous . . . and deadly.

With his disarmingly simple style and complex imagination, Ray Bradbury has seized the minds of American readers for decades.This collection showcases thirty-two of Bradbury's most famous tales in which he lays bare the depths of the human soul. The thrilling title story, A Sound of Thunder, tells of a hunter sent on safari -- sixty million years in the past. But all it takes is one wrong step in the prehistoric jungle to stamp out the life of a delicate and harmless butterfly -- and possibly something else much closer to home ...

Ray Bradbury, the undisputed Dean of American storytelling, dips his accomplished pen into the cryptic inkwell of noir and creates a stylish and slightly fantastical tale of mayhem and murder set among the shadows and the murky canals of Venice, California, in the early 1950s.Toiling away amid the looming palm trees and decaying bungalows, a struggling young writer (who bears a resemblance to the author) spins fantastic stories from his fertile imagination upon his clacking typewriter. Trying not to miss his girlfriend (away studying in Mexico), the nameless writer steadily crafts his literary effort--until strange things begin happening around him.Starting with a series of peculiar phone calls, the writer then finds clumps of seaweed on his doorstep. But as the incidents escalate, his friends fall victim to a series of mysterious "accidents"--some of them fatal. Aided by Elmo Crumley, a savvy, street-smart detective, and a reclusive actress of yesteryear with an intense hunger for life, the wordsmith sets out to find the connection between the bizarre events, and in doing so, uncovers the truth about his own creative abilities.

Few American novels written this century have endured in th heart and mind as has this one-Ray Bradbury's incomparable masterwork of the dark fantastic. A carnival rolls in sometime after the midnight hour on a chill Midwestern October eve, ushering in Halloween a week before its time. A calliope's shrill siren song beckons to all with a seductive promise of dreams and youth regained. In this season of dying, Cooger & Dark's Pandemonium Shadow Show has come to Green Town, Illinois, to destroy every life touched by its strange and sinister mystery. And two inquisitive boys standing precariously on the brink of adulthood will soon discover the secret of the satanic raree-show's smoke, mazes, and mirrors, as they learn all too well the heavy cost of wishes -- and the stuff of nightmare.

Over the course of a storied literary career that has spanned more than half a century, Ray Bradbury has taken us to wonderful places: across vast oceans to foreign lands, onto summer porches of small-town America, through dark and dangerous forests where predators wait, into the hypnotic mists of dream, back to a halcyon past to remember, forward into an exhilarating future, and rocketing through outer space.In We'll Always Have Paris—a new collection of never-before-published stories—the inimitable Bradbury once again does what few writers have ever done as well. He delights us with prose that soars and sings. He surprises and inspires, exposing truths and provoking deep thought. He imagines great things and poignantly observes human foibles and frailties. He enchants us with the magic he mastered decades ago and still performs flawlessly. In these pages, radio voices become indomitable flesh and the dead arise to recapture life. There is joy in an eccentric old man's dance for the world and wonder over the workings of humankind's best friend, O Holy Dog. Whether he's exploring the myriad ways to be reborn, or the circumstances that can make any man a killer, or returning us to Mars, Bradbury opens the world to us and beckons us in.Get ready to travel far and wide once again with America's preeminent storyteller. His tales will live forever. We will always have Bradbury—and for that reason, we are eternally blessed.

Ray Bradbury, America's most beloved storyteller, has spent a lifetime carrying readers to exhilarating and dangerous places, from dark street comers in unfamiliar cities and towns to the edge of the universe. Now, in an extraordinary flight of the imagination a half-century in the making, he takes us to a most wondrous destination: into the heart of an Eternal Family.They have lived for centuries in a house of legend and mystery in upper Illinois -- and they are not like other midwesterners. Rarely encountered in daylight hours, their children are curious and wild; their old ones have survived since before the Sphinx first sank its paws deep in Egyptian sands. And some sleep in beds with lids.Now the house is being readied in anticipation of the gala homecoming that will gather together the farflung branches of this odd and remarkable family. In the past-midnight stillness can be detected the soft fluttering of Uncle Einars wings. From her realm of sleep, Cecy, the fairest and most special daughter, can feel the approach of many a welcome being -- shapeshifter, telepath, somnambulist, vampire -- as she flies high in the consciousness of bird and bat.But in the midst of eager anticipation, a sense of doom pervades. For the world is changing. And death, no stranger, will always shadow this most singular family: Father, arisen from the Earth; Mother, who never sleeps but dreams; A Thousand Times Great Grandmére; Grandfather, who keeps the wildness of youth between his ears.And the boy who, more than anyone, carries the burden of time on his shoulders: Timothy, the sad and different foundling son who must share it all, remember, and tell...and who, alone out of all of them, must one day age and wither and die.By turns lyrical, wistful, poignant, and chilling, From the Dust Returned is the long-awaited new novel by the peerless Ray Bradbury -- a book that will surely be numbered among his most enduring masterworks.

The internationally acclaimed author of The Martian Chronicles, The Illustrated Man, and Fahrenheit 451, Ray Bradbury is a magician at the height of his powers, displaying his sorcerer's skill with twenty-one remarkable stories that run the gamut from total reality to light fantastic, from high noon to long after midnight. A true master tells all, revealing the strange secret of growing young and mad; opening a Witch Door that links two intolerant centuries; joining an ancient couple in their wild assassination games; celebrating life and dreams in the unique voice that has favored him across six decades and has enchanted millions of readers the world over.

The incomparable Ray Bradbury is in the driver's seat, off on twenty-one unforgettable excursions through fantasy, time and memory, and there are surprises waiting around every curve and behind each mile marker. The journey promises to be a memorable one.

Ray Bradbury is, indisputably, one of America's greatest storytellers. The recipient of the 2000 National Book Foundation Medal for Distinguished Contribution to American Letters, he ranks among the most beloved -- and widely read -- of American authors. In The Cat's Pajamas, this "latter-day O. Henry" (Booklist) takes us on an amazing walk through his six-decade career, presenting twenty-two tales -- some old, some new, all but two never before published.Here you will find stories strange and scary, nostalgic and bittersweet, humorous and heart-touching, ranging from the not-so-long-gone past to an unknowable future: a group of senators drinks a bit too much -- and gambles away the United States; a newlywed couple buys an old house and finds their fledgling relationship tested; two mysterious strangers arrive at a rooming house and baffle their fellow occupants with strange crying in the night; a lonely woman takes a last chance on love. The final piece in the collection is a story-poem, a fond salute from Bradbury to his literary heroes Shaw, Chesterton, Dickens, Twain, Poe, Wilde, Melville, and Kipling.The Cat's Pajamas is just that -- the bee's knees -- a touching, timeless, and tender collection from the incomparable Ray Bradbury, and a anoramic view of an amazingly long, rich, and fertile creative career.

From the editors of Garden & Gun, the award-winning magazine that celebrates the best of Southern culture, comes this comprehensive volume of recipes, traditions, tales, and techniques that will immerse you in the South's culinary past, present, and future. With more than 125 detailed and delicious recipes both classic and modern, this beautifully photographed cookbook covers every angle of home cooking, whether you're feeding your family or entertaining a crowd. From roasting a whole hog to throwing a Lowcountry boil, the secrets of light-as-a-feather biscuits to perfectly crispy fried chicken, the art of spicing a Bloody Mary to mixing a potent punch, The Southerner's Cookbook is much more than a collection of recipes—it is a true reflection of the South's culinary landscape.

Will a little Amish girl make a Christmas miracle?It isn't easy to be Katie Weaver. Her sister-in-law Ella is about to have a baby, making Katie an aunt for the second time . . . and she's only six and a half! Plus, her favorite librarian, Miss Donovan, seems sad. She won't even fix up the rundown nativity in front of the library in time for Christmas. Then, an old woman is attacked outside the library, and, one by one, the nativity figures start to disappear!Luckily, there's a new deputy in town, Connor Fields.He takes a real liking to Miss Donovan . . . and he promises to find the missing nativity pieces for Katie.Now, all Katie has to do is pray that Ella's delivery goes well and that some kind of nativity is in place for Christmas Eve. Oh, and that Miss D. falls in love with Connor. Katie knows from watching her three brothers that it makes people real happy. And that would be a Christmas miracle indeed!

A National Book Award Longlist TitleThe first book in a new trilogy from acclaimed New York Times–bestselling author Rae Carson. A young woman with the magical ability to sense the presence of gold must flee her home, taking her on a sweeping and dangerous journey across Gold Rush–era America. Walk on Earth a Stranger begins an epic saga from one of the finest writers of young adult literature.Lee Westfall has a secret. She can sense the presence of gold in the world around her. Veins deep beneath the earth, pebbles in the river, nuggets dug up from the forest floor. The buzz of gold means warmth and life and home—until everything is ripped away by a man who wants to control her. Left with nothing, Lee disguises herself as a boy and takes to the trail across the country. Gold was discovered in California, and where else could such a magical girl find herself, find safety?Rae Carson, author of the acclaimed Girl of Fire and Thorns series, dazzles with the first book in the Gold Seer Trilogy, introducing a strong heroine, a perilous road, a fantastical twist, and a slow-burning romance, as only she can.

Dustin Brown, all-star captain of the 2012 Stanley Cup Champion Los Angeles Kings, tells his story of how he went from being a youth hockey player in Ithaca, New York, to becoming one of the NHL's biggest stars.This short story from the collection Guys Read: The Sports Pages is a winner.

Maximilian Funk is the new kid in school, and not much of a baseball fan, a deadly combination. He has to figure out a way to impress Molly Kinsman, the best pitcher in the city and the most beautiful girl he's ever seen. One little lie couldn't hurt, could it?This short story from the collection Guys Read: The Sports Pages is a winner.

CJ just blew the half-mile relay for his track team, but the race on his mind is the one that's happening off the field in this short story from all-star author Jacqueline Woodson.This short story from the collection Guys Read: The Sports Pages is a winner.