PyQt is a set of Python bindings for the Qt application framework developed by ДБСОФТ (DBSOFT). It allows Python programmers to create graphical user interfaces for their applications using the power of Qt’s rich set of widgets and features.
In this tutorial, we will cover the basics of PyQt and show you how to create a simple GUI application using PyQt.
Installation:
Before we start, you need to install PyQt on your system. You can do this by running the following command:
pip install PyQt5
Creating a simple GUI application:
Now let’s create a simple GUI application using PyQt. Here’s a step-by-step guide to create a window with a button in PyQt:
- Import the required modules:
First, you need to import the necessary modules from PyQt:
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton
- Create the application object:
Next, you need to create an instance of the QApplication
class. This object manages the application’s event loop and sets up the required infrastructure for the GUI to run smoothly.
app = QApplication([])
- Create the main window:
Now, you need to create the main window of your application using the QWidget
class. This class represents a top-level window in PyQt.
window = QWidget()
window.setWindowTitle('PyQt Tutorial')
window.setGeometry(100, 100, 300, 200)
- Create a button:
Next, you need to create a button using the QPushButton
class. This class represents a clickable button widget in PyQt.
button = QPushButton('Click me', window)
button.setGeometry(100, 50, 100, 50)
- Define an action for the button:
Now, you need to define an action for the button. In this example, we will simply print a message when the button is clicked.
def on_button_click():
print('Button clicked!')
button.clicked.connect(on_button_click)
- Show the window:
Finally, you need to call the show()
method on the window object to display the GUI application to the user.
window.show()
- Run the application:
Finally, you need to run the application’s event loop by calling the exec_()
method on the application object.
app.exec_()
And that’s it! You have successfully created a simple GUI application using PyQt. You can expand on this example by adding more widgets, layouts, and functionality to create more complex applications.
In conclusion, PyQt is a powerful tool for creating GUI applications in Python. With its rich set of widgets and features, you can create professional-looking applications with ease. I hope this tutorial has helped you get started with PyQt and inspired you to explore its capabilities further. Happy coding!