Writing for PyQt5 & PySide2

by Martin Fitzpatrick Last updated FAQ
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lpozo | 2020-05-07 20:08:51 UTC | #1

https://www.pythonguis.com/blog/pyqt5-vs-pyside2/

Great post Martin! I think you can also use the EAFP approach, and do something like this:

python 
try:
# PyQt5
from PyQt5 import QtGui, QtWidgets, QtCore
from PyQt5.QtCore import pyqtSignal as Signal, pyqtSlot as Slot
except ImportError:
# PySide2
from PySide2 import QtGui, QtWidgets, QtCore
from PySide2.QtCore import Signal, Slot

In the qt.py file. What do you think?

martin | 2020-05-07 20:10:53 UTC | #2

Thanks for the comment and good point! This works great for applications where you want to support it running on either binding.

Just a warning though, it might not work so great if you're writing a library where your library is imported by an app using PySide2 but PyQt5 is available in site packages. Bit of an edge case, but exactly the weird things that happen when you write and distribute a library :)

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For a complete guide to building GUI applications with Python, see our PyQt6 tutorial. Using another library? We also have a PyQt5 tutorial, PySide6 tutorial and PySide2 tutorial.

Writing for PyQt5 & PySide2 was written by Martin Fitzpatrick .

Martin Fitzpatrick has been developing Python/Qt apps for 8 years. Building desktop applications to make data-analysis tools more user-friendly, Python was the obvious choice. Starting with Tk, later moving to wxWidgets and finally adopting PyQt.

Writing for PyQt5 & PySide2 was published in faq on (updated ) . Feedback & Corrections welcome in our public issue tracker.

 pyqt5 pyqt  pyside2 pyside python qt qt5