This book builds on the concepts of Python programming language introduced in Class XI and explores its advanced features such as file handling, recursive functions and data structures. Spread across 11 chapters, the book is replete with a rich pedagogy comprising true-or-false, multiple-choice and NCERT questions apart from programming problems of varying difficulty levels to help students ace their board exams with ease. Amply supported by illustrative diagrams, keywords and topic highlights, this book is an ideal text that helps students build a firm foundation in the subject.