Editing PyQt (section)

==Hello World example==
[[File:PyQt screen.png|frame|right|The result in [[Plasma 4|KDE Plasma 4]]]]
The below code written for PyQt6 shows a small window on the screen.

<syntaxhighlight lang="python3" line="1">
#!/usr/bin/env python3
"""
Here we provide the necessary imports.
The basic GUI widgets are located in QtWidgets module.
"""
import sys
from PyQt6.QtWidgets import QApplication, QWidget

# Every PyQt application must create an application object.
# The application object is located in the QtWidgets module.
app = QApplication([])

# The QWidget widget is the base class of all user interface objects in PyQt.
# We provide the default constructor for QWidget. The default constructor has no parent.
# A widget with no parent is called a window.
root = QWidget()

root.resize(320, 240)  # The resize() method resizes the widget.
root.setWindowTitle("Hello, World!")  # Here we set the title for our window.
root.show()  # The show() method displays the widget on the screen.

sys.exit(app.exec())  # Finally, we enter the mainloop of the application.
</syntaxhighlight>