PyQt6

PyQt6 is a Python binding of the cross-platform GUI toolkit Qt. Applications built with PyQt6 will run on any platform supported by Qt & Python including Windows, OS X, Linux, iOS and Android.

Created by Riverbank Computing, PyQt is free software (GPL licensed) and has been in development since 1999. The latest version PyQt6 was released in 2021 and the library continues to be updated.

For a complete guide to desktop application development with Python & PyQt6, see the PyQt6 tutorial and PyQt6 book Create Simple GUI Applications with Python & Qt.

Explore PyQt6

PyQt6

Embedding External Programs and Terminals in PyQt6 Widgets

Approaches to embedding terminals and external applications inside your PyQt6 or PySide2 GUI

PyQt vs PySide Licensing

Everything you need to know about LGPL and GPL for your PySide/PyQt applications
PyQt6

Remember the Last Saved Directory with QFileDialog

How to pre-fill file names and remember the last-used folder in PyQt file dialogs
PyQt6

How to Specify Absolute Paths for QIcon in PyQt6

Using os.path and pathlib to build icon paths correctly in your PyQt6 applications
PyQt6

Using command line arguments to open files with PyQt6 apps -- Windows file associations

Accept filenames from the command line and set up Windows "Open with" for your PyQt6 applications
PyQt6

How to Show a QMenu Title in PyQt6

Adding visible titles to your context menus using QLabel, QWidgetAction, and other approaches
PyQt6

Fixing "toHtml() not enough arguments" Error in PyQt6

How to correctly use the asynchronous toHtml() method in QWebEnginePage

Q&A: Are there any built-in QIcons?

Using built-in icons for your apps.
PyQt6

QWebEngine in Qt Designer

How to use QWebEngineView and other custom widgets in your Qt Designer layouts

Why are signals defined as class variables?

Understanding why PyQt6 and PySide6 signals live on the class, not in __init__
PyQt6

How to start/stop or pause running threads?

Control QRunnable workers in PyQt6 with start, stop, and pause functionality

What does @pyqtSlot() do?

Is the pyqtSlot decorator even necessary?
PyQt6

Understanding QPainter Coordinates in PyQt6

How the coordinate system works for drawing on canvases in PyQt6
PyQt6

Fixing "No module named plotwidget" when using PyQtGraph with Qt Designer

How to correctly promote a widget to PyQtGraph's PlotWidget in your .ui files
PyQt6

PyQtGraph plotting over time

Updating plots in real time with PyQtGraph and PyQt6
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