Introduction to PyQt6
last modified June 18, 2021
This is an introductory PyQt6 tutorial. The purpose of this tutorial is to get you started with the PyQt6 toolkit.
PyQt6 is a set of Python bindings for Qt5 application framework from Digia. Qt library is one of the most powerful GUI libraries. The official home site for PyQt6 is www.riverbankcomputing.co.uk/news. PyQt6 is developed by Riverbank Computing.
PyQt6 is implemented as a set of Python modules. It is a multiplatform toolkit which runs on all major operating systems, including Unix, Windows, and Mac OS. PyQt6 is dual licensed; developers can choose between a GPL and a commercial license.
$ pip install PyQt6
We can install PyQt6 with the
PyQt6's classes are divided into several modules, including the following:
QtCore module contains the core non-GUI functionality. This
module is used for working with time, files and directories, various data types,
streams, URLs, mime types, threads or processes. The
classes for windowing system integration, event handling, 2D graphics, basic
imaging, fonts and text. The
QtWidgets module contains classes that
provide a set of UI elements to create classic desktop-style user interfaces.
QtDBus contains classes to support IPC using the D-Bus
QtNetwork module contains the classes for network
programming. These classes facilitate the coding of TCP/IP and UDP clients and
servers by making the network programming easier and more portable. The
QtHelp contains classes for creating and viewing searchable
QtXml contains classes for working with XML files. This module
provides implementation for both SAX and DOM APIs. The
provides classes for displaying the contents of SVG files. Scalable Vector
Graphics (SVG) is a language for describing two-dimensional graphics and
graphical applications in XML. The
QtSql module provides classes
for working with databases. The
QtTest contains functions that
enable unit testing of PyQt6 applications.
Python is a general-purpose, dynamic, object-oriented programming language. The design purpose of the Python language emphasizes programmer productivity and code readability. It was first released in 1991. Python was inspired by ABC, Haskell, Java, Lisp, Icon, and Perl programming languages. Python is a high-level, general purpose, multiplatform, interpreted language. Python is a minimalistic language. Python is maintained by a large group of volunteers worldwide.
The official web site for the Python programming language is python.org
QT_VERSION_STR provides the version of Qt and the
PYQT_VERSION_STR version of PyQt6.
#!/usr/bin/python from PyQt6.QtCore import QT_VERSION_STR from PyQt6.QtCore import PYQT_VERSION_STR print(QT_VERSION_STR) print(PYQT_VERSION_STR)
We print the version of Qt library and PyQt6 module.
$ ./version.py 6.1.1 6.1.1
This chapter was an introduction to PyQt6 toolkit.