About PyQt

PyQt is Python bindings developed by Riverbank Computing Limited for the Qt cross-platform GUI/XML/SQL C++ framework. Qt itself is developed by Digia Plc (formerly Nokia and Trolltech). PyQt provides bindings for Qt 4 and Qt 5. PyQt is distributed under a choice of licences: GPL version 2, GPL version 3, or a commercial license. There are also official bindings from Nokia called PySide available under LGPL. However, PySide is only available for Qt 4.x.

PyQt is available in two editions: PyQt4 which will build against Qt 4.x and 5.x and PyQt5 which will only build against 5.x. Both editions can be built for Python 2 and 3. PyQt contains over 620 classes that cover graphical user interfaces, XML handling, network communication, SQL databases, Web browsing and other technologies available in Qt.

The latest iteration of PyQt is v5.2. It fully supports Qt 5.2.0 which adds support for QtBluetooth, QtPositioning, QtMacExtras, QtWinExtras and QtX11Extras.

PyQt documentation

Current documentation is available for PyQt4 and PyQt5.

The archived PyQt Wiki contains more actively-updated information and examples:

• A collection of links to books can be found on the Books page.

  • Mark Summerfield's book, Rapid GUI Programming with Python and Qt, is an up-to-date guide to GUI application development with Python 2.5, PyQt4 and Qt 4.2/4.3. More information can be found at https://www.qtrac.eu/pyqtbook.html. Mark recommends, incidentally, GUI Bloopers, as appropriate supplementary reading for PyQt programmers.

• A list of tutorials can also be found on the Tutorials page.

  • The PyQt4 tutorial available at https://zetcode.com/tutorials/pyqt4/ is often recommended to new users.

On this Wiki, you can find the following tutorials:

• A tutorial presented by Jonathan Gardner at the 2003 Northwest Linux Fest is available at JonathanGardnerPyQtTutorial.

• A tutorial presented by Oleksandr Yakovlyev for embedding PyQt in C++/Qt application EmbedingPyQtTutorial

PyQt applications

A list of applications that use PyQt as their UI layer can be found on the Some Existing Applications page of the PyQt Wiki. This replaces the list previously found here.

Similarly, the Third Party Packages and Modules page provides a list of resources that can be used to help build applications with certain features.

Links to other resources

The https://www.riverbankcomputing.com/mailman/listinfo/pyqt is low in volume and high in quality. The Roadmap is always valuable to read.

Phil Thompson was interviewed about PyQt for KDE Dot News in August 2006, and profiled for SunWorld Online in 2000.

Earlier Versions

This section describes PyQt version 3 (for Qt 3).

PyQt implements around 300 classes and over 5,750 functions and methods including:

• a substantial set of GUI widgets

• classes for accessing SQL databases (ODBC, MySQL, PostgreSQL, Oracle)

• QScintilla, Scintilla-based rich text editor widget

• data aware widgets that are automatically populated from a database
• an XML parser
• SVG support
• classes for embedding ActiveX controls on Windows (only in commercial version)

Earlier versions of PyQt included a graphical debugger called eric, written using PyQt, which can be used to debug PyQt and ordinary Python console applications. It's now available separately as eric4 from https://eric-ide.python-projects.org/index.html.

PyQt includes pyuic which generates Python code from GUI designs created with Qt Designer. This makes PyQt very useful as a rapid prototyping tool for applications that will eventually be (partly or completely) implemented in C++ because the user interface designs can be re-used without modification.

PyQt is available for Windows, UNIX/Linux, Mac OS X and the Sharp Zaurus.

CategoryPyGUI