Python

Python. Zwięzłe kompendium dla programisty

David Beazley

Przez ostatnie trzydzieści lat Python intensywnie się rozwijał. Stał się dojrzałym językiem programowania, nadającym się do tworzenia zarówno niewielkich, wyspecjalizowanych narzędzi, jak i złożonych systemów. Zakres jego możliwości poszerzają liczne biblioteki i narzędzia. Ta wszechstronność i bogactwo stanowią jednak duże wyzwanie dla programistów, którzy chcieliby nie tyle poznać poszczególne funkcje tego języka, ile dogłębnie go zrozumieć i nauczyć się "pythonicznego" sposobu myślenia. Ta książka jest zwięzłym, skupionym na praktyce przewodnikiem po Pythonie w wersji 3.6 i nowszych. Dzięki niej skoncentrujesz się na rdzeniu języka i podstawowych zagadnieniach, które musisz doskonale opanować, jeśli chcesz pisać w nim dobry kod. Dowiesz się zatem, jak działa Python i jakich zasad należy przestrzegać podczas tworzenia programów, które później będą łatwe do przetestowania, debugowania i utrzymania. Dobrze zrozumiesz kluczowe kwestie, takie jak abstrakcja danych, kontrola przepływu programu, struktura programu, funkcje, obiekty i moduły. Poszczególne treści zostały zilustrowane przejrzystymi fragmentami kodu, pozwalającymi nie tylko łatwiej przyswoić opisane zagadnienia, ale i poczuć niezwykły urok Pythona - tę magię, która sprawia, że programowanie w tym języku daje mnóstwo przyjemności i satysfakcji! W książce: czym jest rdzeń Pythona praca z danymi i ich analiza zasady tworzenia przejrzystego i niezawodnego kodu funkcje i idiomy w programowaniu funkcjonalnym generatory, klasy, moduły, pakiety prawidłowa obsługa I/O i korzyści ze stosowania słowników Python? Zacznij od tego, co w nim najważniejsze!

PyTorch 1.x Reinforcement Learning Cookbook. Over 60 recipes to design, develop, and deploy self-learning AI models using Python

Yuxi (Hayden) Liu

Reinforcement learning (RL) is a branch of machine learning that has gained popularity in recent times. It allows you to train AI models that learn from their own actions and optimize their behavior. PyTorch has also emerged as the preferred tool for training RL models because of its efficiency and ease of use.With this book, you'll explore the important RL concepts and the implementation of algorithms in PyTorch 1.x. The recipes in the book, along with real-world examples, will help you master various RL techniques, such as dynamic programming, Monte Carlo simulations, temporal difference, and Q-learning. You'll also gain insights into industry-specific applications of these techniques. Later chapters will guide you through solving problems such as the multi-armed bandit problem and the cartpole problem using the multi-armed bandit algorithm and function approximation. You'll also learn how to use Deep Q-Networks to complete Atari games, along with how to effectively implement policy gradients. Finally, you'll discover how RL techniques are applied to Blackjack, Gridworld environments, internet advertising, and the Flappy Bird game.By the end of this book, you'll have developed the skills you need to implement popular RL algorithms and use RL techniques to solve real-world problems.

QGIS Blueprints. Develop analytical location-based web applications with QGIS

Ben Mearns

QGIS, the world’s most popular free/open source desktop geographic information system software, enables a wide variety of use cases involving location – previously only available through expensive specialized commercial software. However, designing and executing a multi-tiered project from scratch on this complex ecosystem remains a significant challenge.This book starts with a primer on QGIS and closely related data, software, and systems. We’ll guide you through six use-case blueprints for geographic web applications. Each blueprint boils down a complex workflow into steps you can follow to reduce time lost to trial and error.By the end of this book readers should be able to build complex layered applications that visualize multiple data sets, employing different types of visualization, and give end users the ability to interact with and manipulate this data for the purpose of analysis.

QGIS By Example. Leverage the power of QGIS in real-world applications to become a powerful user in cartography and GIS analysis

Daria Svidzinska

If you are a beginner or an intermediate GIS user, this book is for you. It is ideal for practitioners, data analysts, and application developers who have very little or no familiarity with geospatial data and software.

QGIS Python Programming Cookbook. Over 140 recipes to help you turn QGIS from a desktop GIS tool into a powerful automated geospatial framework

Joel Lawhead

If you are a geospatial analyst who wants to learn more about automating everyday GIS tasks or a programmer who is responsible for building GIS applications,this book is for you. The short, reusable recipes make concepts easy to understand. You can build larger applications that are easy to maintain when they are put together.

QGIS Python Programming Cookbook, Second Edition. Automating geospatial development - Second Edition

Joel Lawhead

QGIS is a desktop geographic information system that facilitates data viewing, editing, and analysis. Paired with the most efficient scripting language—Python, we can write effective scripts that extend the core functionality of QGIS. Based on version QGIS 2.18, this book will teach you how to write Python code that works with spatial data to automate geoprocessing tasks in QGIS. It will cover topics such as querying and editing vector data and using raster data. You will also learn to create, edit, and optimize a vector layer for faster queries, reproject a vector layer, reduce the number of vertices in a vector layer without losing critical data, and convert a raster to a vector. Following this, you will work through recipes that will help you compose static maps, create heavily customized maps, and add specialized labels and annotations. As well as this, we’ll also share a few tips and tricks based on different aspects of QGIS.

QGIS Quick Start Guide. A beginner's guide to getting started with QGIS 3.4

Andrew Cutts

QGIS is a user friendly, open source geographic information system (GIS). The popularity of open source GIS and QGIS, in particular, has been growing rapidly over the last few years. This book is designed to help beginners learn about all the tools required to use QGIS 3.4.This book will provide you with clear, step-by-step instructions to help you apply your GIS knowledge to QGIS. You begin with an overview of QGIS 3.4 and its installation. You will learn how to load existing spatial data and create vector data from scratch. You will then be creating styles and labels for maps. The final two chapters demonstrate the Processing toolbox and include a brief investigation on how to extend QGIS. Throughout this book, we will be using the GeoPackage format, and we will also discuss how QGIS can support many different types of data.Finally, you will learn where to get help and how to become engaged with the GIS community.

Qt5 Python GUI Programming Cookbook. Building responsive and powerful cross-platform applications with PyQt

B. M. Harwani

PyQt is one of the best cross-platform interface toolkits currently available; it's stable, mature, and completely native. If you want control over all aspects of UI elements, PyQt is what you need. This book will guide you through every concept necessary to create fully functional GUI applications using PyQt, with only a few lines of code.As you expand your GUI using more widgets, you will cover networks, databases, and graphical libraries that greatly enhance its functionality. Next, the book guides you in using Qt Designer to design user interfaces and implementing and testing dialogs, events, the clipboard, and drag and drop functionality to customize your GUI. You will learn a variety of topics, such as look and feel customization, GUI animation, graphics rendering, implementing Google Maps, and more. Lastly, the book takes you through how Qt5 can help you to create cross-platform apps that are compatible with Android and iOS. You will be able to develop functional and appealing software using PyQt through interesting and fun recipes that will expand your knowledge of GUIs