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Python for Beginners Mastering the Basics of Python —Part 1 (Alex Harrison) (z-library.sk, 1lib.sk, z-lib.sk)

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Python
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The book presents a clear and accessible approach for those taking their first steps into the world of programming, using one of the most popular and versatile languages today. Starting with an introduction to the language and fundamental programming concepts, the reader is guided through a structured journey that covers everything from basic principles to more advanced and practical topics. The first chapters are dedicated to explaining what the language is, how its intuitive syntax works, and why it is widely used in various fields such as web development, automation, data analysis, and artificial intelligence.Throughout the content, essential fundamentals such as variables, data types, and basic operations are covered, providing a solid foundation for building efficient programs. The book explores control structures, which allow programmers to create intelligent execution flows by using conditional decisions and loops for task repetition. These concepts are explained with practical examples and exercises that encourage active learning.Code reuse is a crucial aspect of modern programming, and the reader will be introduced to the concept of functions, learning how to define and call custom functions to improve code organization and efficiency. Additionally, the book explores data collections such as lists, tuples, and dictionaries—essential tools for storing and manipulating information in a structured and efficient way.Another important aspect covered is file handling and interaction with external data, a fundamental knowledge area for those looking to create applications that handle information dynamically. The reader will learn how to open, read, write, and manipulate text files and other popular formats such as CSV and JSON, preparing them for real-world development challenges.To expand programming possibilities, modules and libraries are introduced, allowing programmers to extend the language's functionality without reinventing the wheel.

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ion linners lies of Python- Parti Pyt for Bee Mastering the Ba Alex Harrison NEWYORK
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PYTHON FOR BEGINNERS Mastering the Basics of Python Part 1 (1/3)
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PYTHON FOR BEGINNERS Mastering the Basics of Python Part 1 (1/3) Alex Harrison NEWYORK Published by NewYork Courses Fifth Avenue, 5500 New York, NY 10001. www.newyorktec.com Copyright © 2024 by NewYork Courses, New York, NY Published by NewYork Courses, New York, NY Simultaneously published in EUA.
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No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Sections 107, 108, and 110 of the United States Copyright Act (17 U.S.C.), without prior written permission from the publisher. Requests for permission from the publisher should be sent to the Permissions Department, NewYork Courses, Fifth Avenue, 5500, New York, NY 10001, or online at support@newyorktec.com. Trademarks: NewYork Courses, the NewYork Courses logo, and other related styles are trademarks of NewYork Courses Inc. and/or its affiliates in the United States and other countries and may not be used without written permission. All other trademarks are the property of their respective owners. NewYork Courses is not affiliated with any product or vendor mentioned in this book. LIMITATION OF LIABILITY / DISCLAIMER OF WARRANTY: THE PUBLISHER AND THE AUTHOR MAKE NO REPRESENTATIONS OR WARRANTIES REGARDING THE ACCURACY OR COMPLETENESS OF THE CONTENT OF THIS WORK AND SPECIFICALLY DISCLAIM ALL WARRANTIES, INCLUDING, WITHOUT LIMITATION, WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE. NO WARRANTY MAY BE CREATED OR EXTENDED BY PROMOTIONAL MATERIALS. THE ADVICE AND STRATEGIES CONTAINED IN THIS BOOK MAY NOT BE SUITABLE FOR EVERY SITUATION. THIS WORK IS SOLD WITH THE UNDERSTANDING THAT THE PUBLISHER IS NOT ENGAGED IN RENDERING LEGAL, ACCOUNTING, OR OTHER PROFESSIONAL SERVICES. IF PROFESSIONAL ASSISTANCE IS REQUIRED, THE SERVICES OF A COMPETENT PROFESSIONAL SHOULD BE SOUGHT. NEITHER THE PUBLISHER NOR THE
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AUTHOR SHALL BE LIABLE FOR DAMAGES ARISING FROM THE USE OF THIS MATERIAL. The inclusion of an organization or website in this work as a source of additional information does not imply that the author or publisher endorses the information or recommendations provided by that organization or website. Furthermore, readers should be aware that the websites mentioned in this work may have changed or disappeared between the time this book was written and when it is read. For general information about other products and services, contact the Customer Service Department by email at support@newyorktec.com. NewYork Courses also publishes its books in various electronic formats. Some content from the printed version may not be available in electronic books.
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Dedication To everyone who sees technology as a tool to turn ideas into reality and overcome challenges, this book is dedicated to you. To my family, who have always been by my side, offering unconditional support and motivation during the most difficult moments. To my parents, who taught me the value of effort and perseverance, and to my wife, whose patience, love, and encouragement gave me the strength to move forward. This book is, in large part, the result of the supportive and trusting environment you have provided me. To my friends, who, through stimulating conversations, idea exchanges, and constant encouragement, have contributed to making this journey richer and more meaningful. With every debate, lesson, and shared insight, I have realized how essential human connections are to growth, both personal and professional. To my professional colleagues, who have inspired me with their innovative ideas, creative solutions, and enthusiasm for technological development. This book reflects much of what I have learned and shared over the years, and I hope it will also inspire others to explore and innovate. And most importantly, to you, the reader, who has chosen this book as your companion on your journey of learning or advancing in programming. May these pages be more than just a technical guide, but also a source of inspiration to create solutions
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that not only work but also impact and connect people. Believing in the power of code is believing in humanity's ability to create something new, unique, and impactful. May this book be a small step toward the great ideas that you will undoubtedly achieve. Alex Harrison
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Acknowledgment This book is the result of a journey that, although solitary at times, would never have been possible without the support and collaboration of incredible people around me. First, I want to express my gratitude to my family, whose patience and understanding were essential during the intense periods of research and writing. To my parents, who always taught me the value of learning and hard work, and to my wife, whose love and constant encouragement gave me the strength to continue, even in difficult moments. To my friends, whose enriching conversations and valuable suggestions helped shape many of the ideas in this book. The learning we shared over time was crucial in expanding my perspective on programming and inspiring me to translate this knowledge into these pages. I also thank my colleagues and mentors, who challenged me to think critically, always strive for excellence, and never stop learning. Their direct and indirect contributions had a significant impact on this work. To the reviewers and editors, who dedicated their time and expertise to ensuring the clarity and quality of this book, I am immensely grateful. Their work improved every page, making this book more accessible and useful to readers. Finally, I thank you, the reader, who has decided to embark on this
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learning journey. This book was written for you, with the sincere hope that it will serve as a practical and inspiring tool in your journey. With gratitude, Alex Harrison
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" In books, learning comes to life and always takes us further.." - Neil Gaiman "The machine can only follow rules; the mind, however, can interpret them." - Alan Turing
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Introduction The Python programming language has become one of the most popular in the world, thanks to its simple yet powerful syntax, making it accessible to beginners and extremely useful for experienced professionals. This book has been carefully designed to meet the needs of those who want to take their first steps in programming, as well as those looking to expand their knowledge and master the fundamentals of the language in a practical and efficient way. Throughout these pages, you will find a clear and didactic approach to understanding the fundamentals of Python and its main features. From basic concepts, such as variables and data types, to more advanced topics, such as file manipulation, database integration, and best development practices, the goal is to provide comprehensive content that combines theory, practical examples, and useful guidance for everyday programming. Each chapter is structured to provide a progressive learning experience. You will start by exploring the essential foundations of the language, advancing to concepts such as control structures, functions, and data manipulation. Additionally, practical examples are presented to demonstrate how to apply these concepts to real-world problem-solving, making learning more dynamic and applicable.
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This book also highlights the importance of writing clear, efficient, and sustainable code, reflecting the demands of today's market, where high-quality programming and the ability to solve problems creatively are essential skills. Whether you are a curious beginner or someone looking to deepen your knowledge, this book is an invitation to explore the countless possibilities that programming with Python offers. Welcome to this journey of learning and discovery, where each line of code represents a new step towards mastering this versatile and powerful language!
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Preface Programming is a constantly evolving universe, and Python is at the heart of this revolution. Since its creation, this language has evolved impressively, becoming a powerful tool for creating versatile, efficient, and accessible solutions. This book was born from my desire to share this knowledge and help developers, both beginners and experienced ones, make the most of what Python has to offer. Throughout my professional journey, I realized that despite the abundance of available information, many developers struggle to apply fundamental concepts in a practical and efficient way. This realization motivated me to create a guide that not only teaches the basics of the language but also explores its more advanced uses with real-world examples and practical applications. This book is the result of many years of learning, experimentation, and work in software development. Each chapter was designed to be clear, objective, and accessible, combining theory with practical real- world examples. Furthermore, I have included best practices and tips to ensure that you can create modern, efficient applications aligned with the demands of today's market. More than just a technical manual, this book is an invitation to explore and create. It reflects my passion for transforming ideas into reality through code and
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my belief that learning is a continuous process. Whether you are a beginner in programming or someone looking to update and expand your horizons, this book was made for you. I hope it serves as a source of learning and inspiration to help you achieve your goals and create amazing solutions.
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Table of Contents 1 - Introduction to Python and Programming 1.1 - What is Python? 1.2 - A Brief History of Python 1.3 - Why Learn Python? 1.4 - Python Application Areas 1.4.1 - Data Science 1.4.2 - Web Development 1.4.3 - Automation 1.5 - Main Advantages of Python 1.6 - How to Install Python 1.7 - Choosing a Development Environment 1.8 - Getting Started with Python 1.9 - The Philosophy of Python 1.10 - Understanding the Python Community 2 - Language Fundamentals: Variables and Data Types 2.1 - What are variables? 2.2 - Rules for naming variables 2.3 - Primitive data types in Python 2.4 - Assigning values to variables 2.5 - Strings: manipulating text
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2.5.1 - Interpolation and f-strings 2.5.2 - Useful string methods 2.6 - Numbers: integers and floating points 2.7 - Booleans and logical values 2.8 - Type conversion in Python 2.9 - The type() operator and type identification 2.10 - Declaration and dynamic assignment 2.11 - The importance of typing in Python 2.12 - Common errors with variables and types 3 - Control Structures: Decisions and Loops 3.1 - Introduction to Control Structures 3.2 - Conditional Structures: if, elif, and else 3.2.1 - Syntax of if/elif/else 3.2.2 - Using Logical Expressions and Operators 3.3 - Loops: for 3.3.1 - Iterating Over Lists and Strings 3.3.2 - Using range with for 3.4 - Loops: while 3.4.1 - Basic Structure of while 3.4.2 - Breaking and Continuing Loops 3.5 - Nesting Control Structures 3.6 - List Comprehensions as an Alternative to Loops 3.7 - Exception Handling in Control Structures 3.8 - Best Practices with Control Structures
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4 - Functions: Reusing Code Efficiently 4.1 - What are functions in Python? 4.2 - Creating your first function 4.2.1 - Basic structure of a function 4.2.2 - Calling a function 4.3 - Passing arguments to functions 4.4 - Return values 4.5 - Default and named arguments 4.6 - Functions with multiple arguments 4.7 - *args and **kwargs 4.8 - Documenting functions with docstrings 4.9 - Best practices for modularity 4.10 - Anonymous functions with lambda 4.11 - Variable scope in functions 4.12 - Functions as first-class objects
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Chapter 1 1 - Introduction to Python and Programming Python is a programming language that has gained immense popularity over the years due to its simplicity, versatility, and wide range of applications. Whether you are an aspiring developer, a seasoned programmer looking to expand your skills, or someone new to the world of coding, Python is an excellent starting point. It serves as a bridge between beginners and advanced concepts, offering an accessible syntax that mirrors everyday language while still being powerful enough to handle complex tasks. This makes Python one of the most preferred languages for learners and professionals alike, establishing it as a fundamental tool in modern technology. Learning Python is not just about understanding a programming language—it’s about developing a new way of thinking and problem-solving. The language encourages you to break down complex problems into manageable pieces, fostering logical reasoning and a methodical approach to solutions. These skills are transferable across many domains
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and programming languages, giving you a strong foundation for your journey in technology. As you dive into Python, you’ll discover how its readability and intuitive structure make the process of learning programming concepts both engaging and rewarding, reducing the typical barriers that many beginners face. One of the reasons Python is so effective as a first programming language is its ability to deliver immediate results. Writing your first line of Python code and seeing it execute successfully provides an unparalleled sense of accomplishment. Unlike some other languages that require intricate setup and a deep understanding of syntax from the start, Python allows you to experiment and learn through practice. This hands-on experience accelerates your understanding of core programming principles, from data types and variables to functions and loops. Additionally, Python’s error messages are designed to be clear and informative, guiding you through mistakes and helping you improve with every step. As you embark on your Python journey, you’ll also be stepping into a dynamic and supportive global community. Python is more than just a tool; it’s a collaborative ecosystem where developers, educators, and enthusiasts work together to share knowledge, solve problems, and create innovative solutions. This sense of community is evident in the abundance of online resources, tutorials, forums, and open-source projects available to learners at every level. Engaging with this community not only enhances your skills but also connects you with others who share your passion for programming. By starting with Python, you’re opening the door to countless opportunities. Whether your interests lie in web development, data science, artificial intelligence, or automation, Python equips you with the tools to explore
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these fields confidently. Its versatility ensures that as you progress, you can seamlessly transition into various domains without needing to learn an entirely new language. Python's adaptability and widespread use make it a smart investment of your time and effort, paving the way for both personal growth and professional success in the ever evolving tech landscape. 1.1 - What is Python? Python is a versatile and widely used programming language created by Guido van Rossum in the late 1980s and first released in 1991. Its design philosophy emphasizes simplicity and readability, making it an excellent choice for beginners and experienced programmers alike. Python has become one of the most popular programming languages in the world due to its flexibility and the broad range of applications it supports, including web development, data science, artificial intelligence, and automation. In this chapter, we will explore what makes Python unique and accessible, diving into its key characteristics, its philosophy, and practical examples that highlight its simplicity and efficiency. Python’s primary strength lies in its simplicity and readability. It was designed to make programming approachable, even for those without prior experience in the field. Unlike many other programming languages, Python uses a minimalistic syntax that mirrors natural language, enabling developers to write clean, concise, and intuitive code. This design choice significantly reduces the learning curve and improves productivity. For instance, Python avoids the use of unnecessary symbols and enforces indentation to define code blocks, which inherently promotes structured and readable code. To illustrate Python’s simplicity, consider the task of printing "Hello, World!" to the console. In Python, this can be
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