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Practical Maya Programming with Python

You're reading from   Practical Maya Programming with Python Unleash the power of Python in Maya and unlock your creativity

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Product type Paperback
Published in Jul 2014
Publisher
ISBN-13 9781849694728
Length 352 pages
Edition 1st Edition
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Author (1):
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Robert Galanakis Robert Galanakis
Author Profile Icon Robert Galanakis
Robert Galanakis
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Table of Contents (12) Chapters Close

Preface 1. Introspecting Maya, Python, and PyMEL FREE CHAPTER 2. Writing Composable Code 3. Dealing with Errors 4. Leveraging Context Managers and Decorators in Maya 5. Building Graphical User Interfaces for Maya 6. Automating Maya from the Outside 7. Taming the Maya API 8. Unleashing the Maya API through Python 9. Becoming a Part of the Python Community A. Python Best Practices Index

Supporting PySide and PyQt


For the purposes of this book, there are two differences between PySide and PyQt. We will use the qtshim.py file to swap between the two depending on what is available. When the module is imported, it will choose between PySide and PyQt implementations, depending on what is available.

The qtshim.py module contains four attributes:

  • The QtCore and QtGui namespaces, pulled from the imported implementation.

  • The Signal class, which just aliases the PySide.QtCore.Signal or PyQt4.QtCore.pyqtSignal class.

  • The wrapinstance function which takes a pointer to a Qt object and returns the Qt object it points to. A pointer here is a long integer that refers to the memory location of the underlying Qt object. There is a significant difference between the implementation of wrapinstance between PySide and PyQt due to how their supporting libraries (shiboken and sip, respectively) work.

I'd suggest using a shim like qtshim to allow easy switching between implementations, and also because...

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