Create outstanding enterprise solutions around DocumentDB using the latest technologies and programming tools with Azure About This Book Get to know the concepts of DocumentDB and learn to work your way around it Manipulate and query your documents using different modern technologies to access DocumentDB Build a real-life scenario using Microsoft Visual Studio and C# with this handy and practical guide Who This Book Is For This book is for novice developers and database architects who need a thorough knowledge of the features of DocumentDB and developing applications with it. Basic knowledge of SQL would be helpful. What You Will Learn Create, manage, and configure your DocumentDB environment Execute SQL queries from simple to complex and nested ones against your database Get to know about advanced DocumentDB techniques such as scopes, portioning, indexing, triggers, UDF’s, and security Fine-tune your DocumentDB database to optimize performance and costs Interact with DocumentDB from different technologies and platforms Build a real-life scenario using C# and put DocumentDB at the heart of Azure solutions Understand how to migrate from your current datastore to DocumentDB In Detail Learning DocumentDB adopts a practical, step-by-step approach to help you learn the basics of DocumentDB and use your new-found abilities in real-life scenarios and enterprise solutions. We start with the absolute basics, such as setting up a DocumentDB environment, and guide you through managing your databases, and executing simple and complex queries. Next, we explain how to work with DocumentDB using the open REST protocol, and demonstrate how JavaScript works with DocumentDB. We’ll also show you how to authenticate and execute queries. Moving on, you’ll find out how to use DocumentDB from within Node.js to kick-start your Node.js projects. Next, you’ll discover how to increase the performance of your DocumentDB database and fine-tune it. Finally, you’ll get to grips with using DocumentDB in conjunction with other services offered from the Microsoft Azure platform. Style and approach This book can be used as a tutorial where you learn step by step, but also as a knowledge base to quickly look up recipes you can instantly utilize. Starting with the basics and moving on to advanced topics, every concept is explained in theory and demonstrated through easy-to-understand examples.

Here's the ultimate of ultimates: nine hundred new recipes from Bruce Weinstein and Mark Scarbrough, the authors of the Ultimate cookbook series. With a quarter million books already in print, their series has followed a simple recipe to success: Give cooks hundreds of solid, basic recipes with thousands of ways to vary them, shake them up, and personalize them so that everyone can be an ultimate cook!With The Ultimate Cook Book, Weinstein and Scarbrough tackle everything from breakfast to barbecue, stir-fries to steaks, chilis to curries, and paellas to puddings. Pick your favorite, cook it as a solid basic, or vary it in hundreds of ways to make the dish your own. You've got years' worth of dishes and a world of cooking experiences ahead of you. What could be more fun?Take chicken, that ubiquitous blank canvas. Roast a whole bird to perfection. Bake it under a salt crust for a dramatic presentation. Roast chicken halves atop winter squash. Prepare a Greek-style casserole with leeks, pine nuts, and raisins. Stuff chicken breasts with a Moroccan-inspired mixture of couscous and spices. There are more than thirty ideas for preparing boneless, skinless chicken breasts. And ten things to do with a leftover roast chicken or that rotisserie bird purchased on the way home. Get the idea?This comprehensive, easy-to-use compendium is the ultimate in inspiration, the ultimate in possibilities. Start your Ultimate cookbook collection today—or round it out with The Ultimate Cook Book.

Ensconced in a lovely tropical villa on idyllic Triggerfish Lane, Jim Davenport anticipates the good life to come. But this isn't living -- it's Florida and the neighborhood is not quite what it seems. It's got overly aggressive Little League parents, drug-free Rastafarians, homicidal hookers, unnatural sex and casual violence. Oh, yes, and there's a psychopathic serial killer-cum-Sunshine-State folklorist named Serge A. Storms living directly across the street. So it's only a matter of time before Jim up and actually kills somebody ...

Josie, Perri, and Kat have been best friends since third grade—the athlete, the drama queen, and the popular beauty. Growing up in an affluent suburb of Baltimore, they enjoy privileges many teenagers are denied. But on the final day of school one of them brings a gun with her. And when the police break down the door of the high school girls' bathroom, locked from the inside, they find two of the friends wounded, one of them critically . . . and the third girl is dead.From multiple-award winner Laura Lippman, one of the most acclaimed authors of crime fiction writing today, comes a tale of secrets, friendship, and betrayal that illuminates a dark and chilling event with clarity and empathy.

The old Apache renegade Soldado Viejo is hiding out in Mexico, and the Arizona Department Adjutant has selected two men to hunt him down. One -- Dave Flynn -- knows war, the land, and the nature of his prey. The other is a kid lieutenant named Bowers. But there's a different kind of war happening in Soyopa. And if Flynn and his young associate choose the wrong allies -- and the wrong enemy -- they won't be getting out alive.

As a member of the Mohawk Bear Clan, Baron has always been fascinated by bears—their gentle strength and untamed power. But the Bearwalker legend, passed down by his ancestors, tells of a different kind of creature—a terrible mix of human and animal that looks like a bear but is really a bloodthirsty monster. The tale never seemed to be more than a scary story. Until now.During a class camping trip deep in the Adirondacks, Baron comes face-to-face with an evil being that is all too real. Although he knows how the story ends in the legend, Baron must overcome this Bearwalker on his own terms.

The nude photo of a teenage runaway shows up on a pornographic website, and the girl's father turns to Detective Chief Inspector Alan banks for help. But these are typical circumstances, for the runaway is the daughter of a man who's determined to destroy the dedicated Yorkshire policeman's career and good name. Still it is a case that strikes painfully home, one that Banks—a father himself—dares not ignore as he follows it's squalid trail into teeming London, and into a world of drugs, sex, and crime. But murder follows soon after—gruesome ,sensational, and, more than once—pulling Banks in a direction that he dearly does not wish to go: into the past and private world of his most powerful enemy, Chief Constable Jimmy Riddle.

Annie Darling, owner of the Death on Demand mystery bookstore, is understandably upset. It isn't like her p.i. husband Max to abruptly disappear—and homicide is definitely not his style. But when his car is found abandoned on a remote road with a brutally slain, once-beautiful young woman nearby and the murder weapon stashed in the trunk, Annie's worst fears seem justified.The police have Max all but tried and convicted—except for Chief Billy Cameron, whose unshakable belief in his friend's innocence prompts his removal from the case. And as a media circus descends on tiny Broward's Rock, Annie will have to place her own life in jeopardy to clear her husband's name. But time is running out—and she has only one slim chance to unmask a killer who just may have committed the perfect crime.

Bookselling burglar Bernie Rhodenbarr doesn't generally get philosophical about his criminal career. He's good at it, it's addictively exciting—and it pays a whole lot better than pushing old tomes. He steals therefore he is, period.He might well ponder, however, the deeper meaning of events at the luxurious Chelsea brownstone of Herb and Wanda Colcannon, which is apparently burgled three times on the night Bernie breaks in: once before his visit and once after. Fortunately he still manages to lift some fair jewelry and an extremely valuable coin. Unfortunately burglar or burglars number three leave Herb unconscious and Wanda dead . . . and the cops think Rhodenbarr dunnit.There's no time to get all existential about it—especially after the coin vanishes and the fence fencing it meets with a most severe end. But Bernie is going to have to do some deep thinking to find a way out of this homicidal conundrum.

Take your expertise to the next level by unraveling various techniques to customize TFS 2015About This BookLearn how to efficiently modify your TFS-specific dashboards for complex server pluginsFind out the pros and cons of various extension points and customizations in TFSA fast-paced guide with highly concentrated information on TFS customizations Who This Book Is For This book is intended for anyone with experience with TFS, and in particular, those intermediate users who want to add more value to their organization by making its TFS users more productive. The book requires basic coding skills.What You Will LearnCustomize TFS 2015 dashboard and administer various componentsConfigure board cards, swim lanes, and columnsExplore the types of changes that can be made on the TFS process templatesCreate your own custom control for the Web and client work item formsBuild up new check-in policiesGet to grips with your personal server plugins and their usesCustomize both XAML builds and the new build systemSchedule jobs for more complicated business rules to run on a scheduleExtend your TFS possibilities with service hooks and VSO extensions In Detail Team Foundation Server is an efficacious collaboration tools that will allow you to share code, track records, software, all in a single package. Integrate it with your existing IDE or editor and let your team work in a flexible environment that adapts to projects of all shapes and sizes. Explore what gives you the edge over other developers by knowing the tips and quick fixes of customizing TFS. Effectively minimize the time users spend interacting with TFS so that they can be more productive. In this book you will quickly cover lots of TFS extension points, from the very basic task of customizing and configuring dashboards to customizing automated builds and check-in policies. You will learn how to create dashboards in TFS 2015, as well as add tiles, graphs, and more useful modifications. You'll perform customizations that make TFS work for you by streamlining your team’s boards. You'll cast modifications to the process template and learn the tips and tricks required to make efficient and valuable uses of your team’s board. From team-specific dashboards to complex server plugins, everything is covered in this concentrated guide to aid your knowledge. Delving deep, this book covers the pros and cons of check-in policies, as well as their proper debugging and deployment strategies. After that you will learn about advanced XAML builds and TFS jobs to further experiment with the activities of your jobs on your system. Finally, you will learn about service hooks and the amazing utility of .VSO extensions to help you create new extensions and explore new levels of customization.Style and approach This is an easy-to-follow guide with clearly explained and demonstrated examples.

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.

It was the start of a grand adventure in a land of antiquity, a rare opportunity to visit biblical places shrouded in mystery. But in a Jerusalem hotel room a world away from everything she knows, Dinah van der Lyn hears angry voices through the wall, followed by a crash and a brief cry in English...for help! The brutal shattering of an evening's stillness becomes a prelude to terror. Without warning, Dinah has been unwittingly pulled into something unholy transpiring in a sacred city, and she must find answers hidden in the shadows. And she must trust an enigmatic stranger as she races through ancient, twisting streets teeming with secrets and peril, a man who may be leading her to safety...or to her doom.

In her very first novel, award-winning author Nevada Barr reveals another side to her remarkable storytelling prowess with this heart-wrenching yet tender tale of two women whose boundless devotion to each other is continually challenged in nineteenth century America.

Bernie Rhodenbarr is actually trying to earn an honest living. It's been an entire year since he's entered anyone's abode illegally to help himself to their valuables. But now an unscrupulous landlord's threat to increase Bernie's rent by 1,000% is driving the bookseller and reformed burglar back to a life of crime -- though, in all fairness, it's a very short trip. And when the cops wrongly accuse him of stealing a priceless collection of baseball cards, Bernie's stuck with a worthless alibi since he was busy burgling a different apartment at the time . . . one that happened to contain a dead body locked inside a bathroom.So Bernie has a dilemma. He can trade a burglary charge for a murder rap. Or he can shuffle all the cards himself and try to find the joker in the deck -- someone, perhaps, who believes that homicide is the real Great American Pastime.

The Age of Man has begun. The "undesirable" creatures of legend have been driven from their lands, magic has been forsaken, the old gods reduced to myth.Now humans will rule the kingdoms of the island continent of Pentania. But they are not alone.Alson's king has been assassinated, its capital besieged by a malevolent wizard. The chaos and terror now sweeping the land have come to the remote village of Diln -- sending young Jarom far from his home to seek aid against the nefarious usurper. But a mysterious council has decreed Jarom must find one of the mythical Swords of Asahiel -- the divine talismans the elven avatars used to forge the earth -- in order to save a quarrelsome, fledgling humanity. For a Demon Queen has awakened from the abyss -- and humankind is about to discover its powerlessness in the face of the ancient terrors of the world.

Build dynamic, data-driven websites and modern web applications with Flask About This Book Discover the most popular Flask resources on the web with ease Familiarize yourself with third-party libraries commonly used with Flask Create a fast, interactive, and secure web app with this hands-on guide Who This Book Is For This book is for anyone who wants to develop their knowledge of Python into something that can be used on the web. Flask follows the Python design principles and can be easily understood by anyone who knows Python, and even by those who do not. What You Will Learn Create your web pages to add modularity and flexibility to your web app using templates Store and retrieve relational data using SQLAlchemy Develop schema migrations with Alembic Produce an admin section using flask-admin Build RESTful APIs using Flask-Restless Simulate requests and sessions using the Flask test client Make Ajax requests from Jinja2 templates In Detail Flask is a small and powerful web development framework for Python. It does not presume or force a developer to use a particular tool or library. Flask supports extensions that can add application features as if they were implemented in Flask itself. Flask’s main task is to build web applications quickly and with less code. With its lightweight and efficient web development framework, Flask combines rapid development and clean, simple design. This book will take you through the basics of learning how to apply your knowledge of Python to the web. Starting with the creation of a “Hello world” Flask app, you will be introduced to the most common Flask APIs and Flask’s interactive debugger. You will learn how to store and retrieve blog posts from a relational database using an ORM and also to map URLs to views. Furthermore, you will walk through template blocks, inheritance, file uploads, and static assets. You will learn to authenticate users, build log in/log out functionality, and add an administrative dashboard for the blog. Moving on, you will discover how to make Ajax requests from the template and see how the Mock library can simplify testing complex interactions. Finally, you will learn to deploy Flask applications securely and in an automated, repeatable manner, and explore some of the most popular Flask resources on the web. Style and approach A comprehensive guide packed with real-world examples and popular use cases; starting with basic overviews and diving into the practical aspects of Flask Framework.

Utilize ServiceStack as the rock solid foundation of your distributed systemAbout This BookTake advantage of the various data providers to access authentication and authorization, sessions, cache, and databaseLeverage asynchronous processing for decoupling components to ease scalingMonitor and tune the performance of your distributed system Who This Book Is For Mastering ServiceStack is targeted at developers who have already implemented web services with ASMX, WCF, or ServiceStack and want to gain more insight into the possibilities ServiceStack has to offer to build distributed systems of all scales.What You Will LearnDesign a prudent and resilient API, following the RESTful designUnderstand the internal processing chain and utilize the provided hooksIncorporate ServiceStack as a full service provider to your existing distributed systemLeverage the power of asynchronous processing and add message queues to your architectureAnalyze and tune the performance of your service In Detail Mastering ServiceStack covers real-life problems that occur over the lifetime of a distributed system and how to solve them by deeply understanding the tools of ServiceStack. Distributed systems is the enterprise solution that provide flexibility, reliability, scaling, and performance. ServiceStack is an outstanding tool belt to create such a system in a frictionless manner, especially sophisticated designed and fun to use. The book starts with an introduction covering the essentials, but assumes you are just refreshing, are a very fast learner, or are an expert in building web services. Then, the book explains ServiceStack's data transfer object patterns and teach you how it differs from other methods of building web services with different protocols, such as SOAP and SOA. It also introduces more low-level details such as how to extend the User Auth, message queues and concepts on how the technology works. By the end of this book, you will understand the concepts, framework, issues, and resolutions related to ServiceStack.Style and approach A step-by-step approach that follows the natural requirements of a distributed system in a conversational style.

Get started with Python for data analysis and numerical computing in the Jupyter notebookAbout This BookLearn the basics of Python in the Jupyter NotebookAnalyze and visualize data with pandas, NumPy, matplotlib, and seabornPerform highly-efficient numerical computations with Numba, Cython, and ipyparallel Who This Book Is For This book targets students, teachers, researchers, engineers, analysts, journalists, hobbyists, and all data enthusiasts who are interested in analyzing and visualizing real-world datasets. If you are new to programming and data analysis, this book is exactly for you. If you're already familiar with another language or analysis software, you will also appreciate this introduction to the Python data analysis platform. Finally, there are more technical topics for advanced readers. No prior experience is required; this book contains everything you need to know.What You Will LearnInstall Anaconda and code in Python in the Jupyter NotebookLoad and explore datasets interactivelyPerform complex data manipulations effectively with pandasCreate engaging data visualizations with matplotlib and seabornSimulate mathematical models with NumPyVisualize and process images interactively in the Jupyter Notebook with scikit-imageAccelerate your code with Numba, Cython, and IPython.parallelExtend the Notebook interface with HTML, JavaScript, and D3 In Detail Python is a user-friendly and powerful programming language. IPython offers a convenient interface to the language and its analysis libraries, while the Jupyter Notebook is a rich environment well-adapted to data science and visualization. Together, these open source tools are widely used by beginners and experts around the world, and in a huge variety of fields and endeavors. This book is a beginner-friendly guide to the Python data analysis platform. After an introduction to the Python language, IPython, and the Jupyter Notebook, you will learn how to analyze and visualize data on real-world examples, how to create graphical user interfaces for image processing in the Notebook, and how to perform fast numerical computations for scientific simulations with NumPy, Numba, Cython, and ipyparallel. By the end of this book, you will be able to perform in-depth analyses of all sorts of data.Style and approach This is a hands-on beginner-friendly guide to analyze and visualize data on real-world examples with Python and the Jupyter Notebook.