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Discover clean ways to write code that will run on both Python 2 and 3.This book is tutorial-oriented with detailed examples of how to convert existing Python 2-compatible code to code that will run reliably on both Python 2 and 3.

Although Python 3 is considered the future of Python, Python 2.x will be maintained for several more years, alongside Python 3, which is not backwards compatible. For those who need to support both versions, this book guides you through the process.

Python 2 and 3 Compatibility explains the syntactical differences between Python 2 and 3, and how to use Python packages Python-Future and Six to implement neutral compatibility. Developers working on either small, medium, or large projects will appreciate the author´s clear explanations, detailed examples, and clean techniques to help them extend support for both versions to their existing Python 2-compatible projects.

What You´ll Learn

Understand the syntactical differences between Python 2 and 3
Use the Six and Future libraries
Review the new features in Python 3
Choose which Python versions to support when doing neutral support
Decide on whether to port or provide support for both versions
Who This Book Is For

Professional Python developers and enthusiasts that want to implement Python 3 support for their existing Python 2 compatible code.

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1. Printing and BackTick repr
2. Numbers 3. Setting Metaclasses 4. Strings and Bytes 5. Package Imports 6. Exceptions 7. HTML Processing 8. Working with Files 9. Custom Behavior of Classes 10. Collections and Iterators 11. More Built-ins 12. Standard Library Modules

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Joannah Nanjekye is from Uganda, a software engineer, conference speaker and a proud FOSS (Free and Open Source Software) contributor who presented at PyCon ZA in South Africa in 2016 and 2017. She shares her knowledge on implementation for Python 2 and 3 support from experiences on her work on open source projects. She worked as software developer for Laboremus Uganda and Fintech Uganda before pursuing a career as Aeronautical Engineer with a bias in Avionics at Kenya Aeronautical College. She is a proud Rails Girls Summer of Code alumnae and was mentored into FOSS development during her time as a scholar.

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