Python Tutorial (official documentation)

Python Tutorial is the official introduction to the Python programming language, written to help beginners understand how Python works and how to use it effectively. It covers fundamental programming concepts such as variables, data types, control flow, functions, modules, and data structures, before gradually introducing more advanced topics like file handling, exceptions, classes, and object-oriented programming. The tutorial is known for its clear, structured explanations and practical examples, making it one of the most reliable starting points for learning Python directly from its core design principles.