The means of efficiently processing information on the Internet have never been as important and in demand as they are today. This book is the first practical guide to programming intelligent applications for Web 2.0. Here you will find everything you need to learn how to create self-learning programs in Python that can collect and analyze huge amounts of data available on the Web. You will learn to use machine learning algorithms, adapting them to your own needs. To master the material presented, you will not need any special knowledge of data analysis, machine learning, or mathematical statistics. However, it is assumed that you have sufficient programming experience and are familiar with the basic concepts. In each chapter you will find practical examples and tasks that will help you quickly and easily master various aspects of algorithms.