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This book is a straightforward guide to the Python programming language and programming techniques. It covers all of the practical programming skills that may be required up to GCSE level and for those at AS Level with limited exposure to Python. It is suitable for both experienced programmers, students or individuals with very little or no programming experience in other languages.

It teaches basic syntax and programming techniques, and introduces three inbuilt Python modules:

• Tkinter, used for building a graphical user interface, which is an option...

The aim of this book is to provide detailed coverage of the topics in the new OCR AS and A Level

Computer Science specifications H046 / H446.

The book is divided into twelve sections and within each section, each chapter covers material that can

comfortably be taught in one or two lessons. Material that is applicable only to the second year of the full

A Level is clearly marked. Sometimes this may include an entire chapter and at other times, just a small

part of a chapter.

Each chapter contains exercises and questions, some new and some from past...

An exhilarating debut novel that follows one woman's hunt for the truth when she realizes she might have married a killer

They said her death was a tragic accident. And I believed them...until now.

Carmen is happily married to Tom, although she knows she'll always live in the shadow of another woman--the mistress who ended his first marriage: Zena. Mercurial, mesmerizing, manipulative Zena--a woman who, Carmen begins to discover, had the potential to incite the darkest of emotions. Zena, who drowned in the sea late one night.

Zena seems ever-more...

The history of semaphore and colour light signals is outlined and the implications for modellers is clearly explained. A variety of different types of points, signals and level crossings is then illustrated with detailed instructions describing how to make them work.

Simple, tried and tested mechanical and electrical methods used by modellers are explained together with modern electronic approaches, which are described in a way that enables them to be easily understood. The reader is taken step-by-step through various projects, and diagrams and photographs are provided throughout,...