Python from zero to advanced: Master Python from basic to advanced

This book is a comprehensive guide for those who want to learn and master the Python programming language, starting from the basics to advanced concepts. It is designed to cater to both beginners who have never programmed before and developers looking to deepen their knowledge and explore more sophisticated features of the language. From setting up the development environment to building scalable applications, each chapter presents theoretical concepts and practical examples to ensure a solid and progressive learning experience. The reader will be introduced to the fundamental syntax of the language, understanding basic structures such as variables, operators, conditional statements, and loops. Then, they will explore functions, lists, dictionaries, and other essential data types for building efficient programs.The book also covers Object-Oriented Programming (OOP) in Python, explaining concepts such as classes, inheritance, encapsulation, and polymorphism. Based on this, the reader will learn to develop modular, reusable, and maintainable code. Additionally, techniques for file handling, data reading and writing, and consuming APIs for integration with external services are addressed. One of the key topics covered in the book is database utilization, presenting everything from using SQLite for data storage to SQLAlchemy, a powerful library for handling relational databases with Python.The reader will be guided in developing APIs using two of the most popular frameworks in the language: Flask and FastAPI. Best practices for creating efficient, secure, and high-performance services will be explored. Regarding security, essential concepts such as authentication and authorization will be covered, ensuring that developed applications follow protection standards against attacks and unauthorized access. Furthermore, the book introduces automated testing techniques, which are fundamental for ensuring code quality, including the use of frameworks such as pytest for writing unit and integration tests.To complete the journey, advanced topics related to deployment and application scalability are covered, exploring containers with Docker and techniques for hosting and distributing services in production environments. The reader will gain a comprehensive understanding of how to structure, test, optimize, and deploy their applications efficiently and professionally. Throughout the book, practical examples, challenges, and exercises are provided to reinforce the learned concepts, allowing the reader to progress continuously and effectively. This is an essential resource for anyone looking to master Python and apply it to real-world projects, from small automated scripts to robust and scalable systems.