Qt Contributors Summit 2022 - Program/Qt for Python Discussion

Session Summary

Discussion about future development in Qt for Python/Shiboken

Session Owners

• Friedemann Kleint

Notes

(Taken by CristianMaureiraFredes)

• Presentation of the Team
• List of improvements since last year
  • PyPy support
  • wheel split
  • cross building
  • wheel size reduced
  • libraries split (libpysideqml, libpyside)
  • many new QML decorators
  • tools
    • pyside6-qmllint, pyside6-project
  • Improved documentation

• Binding generation details
• Shiboken (bindings generator)​
  • Opaque containers were added: Python bindings for C++ containers​
  • Made many types built-in: primitive C++ types as well as containers​
  • Type SbkObjectType was removed (is now aliased to PyTypeObject​
  • The Shiboken module can now be imported as shiboken6​
  • Improved documentation of new functionalities, options, etc.​

• Future
  • Qt Enums as Python Enums
  • Improve embedded story
  • WebAssembly research
  • Deployment to android
  • Continue improvement on Python ecosystem

Q&A

• Ogi Moore:
  • https://bugreports.qt.io/browse/PYSIDE-1924
  • Thanks for being open to new compatibilities in NumPy.
  • FK: Np* methods is there, so the idea now is to use void ptr?

​** What I suggest is to use VoidPtr

• • Regarding PyPy support: found some issue. Will open a bug report.

• Samuel
  • wheels for ARM?
  • Soon! Qt6 is arriving in Debian Testing, so once that's done we could workaround creating wheels.
  • Here is a preliminary set of wheels on Debian 12 (testing) arm64 https://qtinfo.dev/624_aarch64.tar.gz
  • Maybe the transformation of code within Qt/C++ snippets to a snippet file in Qt/C++ could be a nice task for people wanting to contribute.
    • Then, if the snippet/file exist, we can transform it.