PyQt Tutorial

What is PyQt?

PyQt is a Python library which uses Qt GUI framework to create graphical application. Qt is a cross platform library that implements API for creating and accessing GUI applications. Qt is internally written in C++ which increases the speed of execution of PyQt code. In this tutorial series we will learn PyQt programming and build GUI applications on Windows, Mac or Linux.

PyQt Example

To show a simple example of PyQt we will create a simple window which will create a window showing "Hello PyQt".

In the below example we imports necessary modules from PyQt and create a QApplication instance and also create a QMainWindow and then adds a QLabel to the window, sets its text, and then shows the window.

import sys
from PyQt6.QtWidgets import QApplication, QMainWindow, QLabel

def main():
   # Create the application instance
   app = QApplication(sys.argv)

   # Create the main window
   window = QMainWindow()
   window.setWindowTitle("Simple PyQt Example")
   window.setGeometry(100, 100, 400, 200)

   # Create a label widget
   label = QLabel("Hello, PyQt!", window)
   label.move(150, 80)

   # Show the window
   window.show()

   # Execute the application
   sys.exit(app.exec())

if __name__ == "__main__":
   main()

Output

PyQt Basic Commands

PyQt contains many classes and methods for building GUI applications. Some basic commands include −

• Creating widgets like buttons, labels, and text boxes
• Organizing layouts to arrange widgets
• Handling events such as button clicks and keyboard input
• Customizing styles and appearances

Why Learn PyQt?

Developer intrested in building GUI application should learn PyQt because of the following reasons −

• Cross-platform development − Using PyQt we can build applications that run on Windows, macOS, and Linux.
• Rich user interfaces − We can utilize PyQt extensive library of widgets and tools for creating modern and feature-rich interfaces.
• Integration with Python − We can use the functionality and features of Python to make the PyQt applications more efeective and robust.
• Extensive documentation and community support − PyQt has thorough documentation and an active community, making it easier to learn and troubleshoot.

PyQt Applications

PyQt can be used in development of various types of Desktop GUI applications like −

• Scientific and engineering tools
• Games and multimedia applications
• Business and productivity software
• Educational applications

Who should learn PyQt

PyQt is suitable for the Python developers who are intrested in GUI development and the students and professionals who are looking to build cross-platform GUI applications. Anyone interested in creating interactive and visually appealing interfaces can also learn PyQt.

Prerequisites to Learn PyQt

To learn PyQt we should need to have a basic understanding of Python programming. If you are familiar with object roiented programming then its bggod else it not mandatorialy required.

PyQt Jobs and opportunities

The developers who are learning PyQt can apply to various job roles like −

• Software developer/engineer
• GUI designer
• UI/UX developer
• Python developer
• Application architect