Catalog of theme icons in Qt

qt_theme_icon_catalog.py

import sys
from PySide6.QtWidgets import (
    QWidget,
    QApplication,
    QGridLayout,
    QToolButton,
)
from PySide6.QtGui import QIcon


class IconCatalog(QWidget):
    COLS = 16

    def __init__(self, parent=None):
        super().__init__(parent=parent)

        self.setLayout(QGridLayout())
        for i, a in enumerate(QIcon.ThemeIcon):
            row = i // self.COLS
            col = i % self.COLS
            button = QToolButton()
            button.setToolTip(str(a))
            button.setIcon(QIcon.fromTheme(a))
            self.layout().addWidget(button, row, col)


def main():
    app = QApplication(sys.argv)
    w = IconCatalog()
    w.show()
    app.exec()


if __name__ == "__main__":
    main()