Python PyQt program - Display Hello, PyQt!

Python PyQt Widgets: Exercise-1 with Solution

Write a Python program that displays the text "Hello, PyQt!" in the center of the window using PyQt.

From doc.qt.io:

QApplication Class: The QApplication class manages the GUI application's control flow and main settings.

QMainWindow Class: The QMainWindow class provides a main application window.

QLabel Class: The QLabel widget provides a text or image display.

QVBoxLayout Class: The QVBoxLayout class lines up widgets vertically.

QWidget: The QWidget class is the base class of all user interface objects.

Qt module: PyQt5 is a set of Python bindings for the Qt application framework. It allows us to use Qt, a popular C++ framework, to create graphical user interfaces (GUIs) in Python.

Sample Solution:

Python Code:

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QLabel, QVBoxLayout, QWidget
from PyQt5.QtCore import Qt
class HelloPyQtApp(QMainWindow):
    def __init__(self):

        # Set the window properties (title and initial size)
        self.setWindowTitle("Hello, PyQt!")
        self.setGeometry(100, 100, 400, 200)  # (x, y, width, height)

        # Create a central widget for the main window
        central_widget = QWidget()

        # Create a QLabel widget with the text "Hello, PyQt!"
        label = QLabel("Hello, PyQt!")

        # Create a layout for the central widget and add the label
        layout = QVBoxLayout()

        # Center-align the label

        # Set the layout for the central widget

def main():
    app = QApplication(sys.argv)
    window = HelloPyQtApp()

if __name__ == "__main__":


In the exercise above -

  • Import the necessary modules.
  • Create a "QMainWindow" named HelloPyQtApp.
  • Set the window's title and initial size using self.setWindowTitle and 'self.setGeometry'.
  • Create a central widget using QWidget and set it as the central widget of the main window using 'self.setCentralWidget'.
  • Create a "QLabel" widget named label with the text "Hello, PyQt!".
  • Create a "QVBoxLayout" for the central widget, add the label to it, and center-align the label's text.
  • In the main function, we set the layout for the central widget and execute the PyQt application's event loop.


PyQt: Python PyQt program  - Display Hello, PyQt!. Part-1


Flowchart: Python PyQt program  - Display Hello, PyQt!.
Flowchart: Python Python PyQt program  - Display Hello, PyQt!.

Python Code Editor:

Previous: Python PyQt Widgets Home.
Next: Yes or No buttons.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

Follow us on Facebook and Twitter for latest update.