Mark Summerfield

Mark is a computer science graduate with many years of experience working in the software industry, primarily as a programmer, and also writing and editing technical documentation. Mark owns Qtrac Ltd. (, where he works as an independent programmer, author, editor, and trainer, specializing in the C++, Go, and Python languages, and the Qt, PyQt, and PySide libraries. Mark is the creator of the commercial DiffPDFc and DiffPDF PDF comparison applications (

Other books by Mark Summerfield:

Python in Practice (2013, ISBN-13: 978-0-321-90563-5)

Advanced Qt Programming (2011, ISBN-13: 978-0-321-63590-7)

Programming in Python 3 (First Edition, 2009, ISBN-13: 978-0-13-712929-4; Second Edition, ...

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