David Ascher Books

Einfuhrung in Python

By Mark Lutz

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Learning Python, Second Edition

By David Ascher, Mark Lutz

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Portable, powerful, and a breeze to use, Python is the popular open source object-oriented programming language used for both standalone programs and scripting applications. Python is considered ea...

Python Cookbook

By Alex Martelli, Anna Ravenscroft, David Ascher

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Portable, powerful, and a breeze to use, Python is the popular open source object-oriented programming language used for both standalone programs and scripting applications. It is now being used b...

Learning Python

By Mark Lutz

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Introduction a Python

By Lutz

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Aprendendo Python

By M. Lutz

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PARTE I - Comec ʹando 1. Uma sessa o de perguntas e respostas sobre o Python 2. Como o Python executa programas 3. Como voce executa programas PARTE II - Tipos e operac ʹo es 4. Nu meros 5. String...

Learning Python

By David Ascher, Mark Lutz

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Python Cookbook

By Anna Ravenscroft, David Ascher, Alex Martelli

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Python Cookbook

By Anna Ravenscroft, David Ascher, Alex Martelli

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Learning Python

By Mark Lutz, David Ascher, Frank Willison

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.