Source Code: How to move icons between QListWidgets | PyQt6 Tutorial

import sys
import os
import glob
from PyQt6.QtWidgets import QApplication, QWidget, QListView, QAbstractItemView, QHBoxLayout, QVBoxLayout
from PyQt6.QtCore import Qt, QSize
from PyQt6.QtGui import QStandardItemModel, QIcon, QStandardItem, QKeyEvent

class ListView_Left(QListView):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.parent = parent
        self.m_model = QStandardItemModel(self)
        self.setModel(self.m_model)
        self.setAcceptDrops(True)
        self.setIconSize(QSize(150, 150))
        self.setDragDropMode(QAbstractItemView.DragDropMode.DragDrop)
        self.setResizeMode(QListView.ResizeMode.Adjust)
        self.setViewMode(QListView.ViewMode.IconMode)

    def dropEvent(self, event):
        super().dropEvent(event)
        self.parent.listViewRight.model().removeRow(self.parent.listViewRight.currentIndex().row())


class ListView_Right(QListView):
    def __init__(self,  parent=None):
        super().__init__(parent)
        self.parent = parent
        self.m_model = QStandardItemModel(self)
        self.setModel(self.m_model)
        self.setAcceptDrops(True)
        self.setIconSize(QSize(150, 150))
        self.setDragDropMode(QAbstractItemView.DragDropMode.DragDrop)
        self.setResizeMode(QListView.ResizeMode.Adjust)
        self.setViewMode(QListView.ViewMode.IconMode)
        self.installEventFilter(self)

    def eventFilter(self, source, event):
        if event.type() == QKeyEvent.Type.KeyPress and event.key() == Qt.Key.Key_Delete:
            if source == self:
                row_indx = self.currentIndex().row()
                self.model().remove().removeRow(row_indx)
        return super().eventFilter(source, event)

    def dropEvent(self, event):
        super().dropEvent(event)
        self.parent.listViewLeft.model().removeRow(self.parent.listViewLeft.currentIndex().row())


class MyApp(QWidget):
    def __init__(self):
        super().__init__()
        self.window_width, self.window_height = 1400, 500
        self.resize(self.window_width, self.window_height)

        layout = QHBoxLayout()
        self.setLayout(layout)

        self.listViewLeft = ListView_Left(self)
        layout.addWidget(self.listViewLeft)

        self.listViewRight = ListView_Right(self)
        layout.addWidget(self.listViewRight)

        self.loadIcons()

    def loadIcons(self):
        icon_folder = os.path.join(os.getcwd(), 'icons')
        for icon in glob.glob(os.path.join(icon_folder, '*.ico')):
            item = QStandardItem()
            item.setIcon(QIcon(icon))
            self.listViewLeft.m_model.appendRow(item)


if __name__ == '__main__':
    # don't auto scale when drag app to a different monitor.
    # QGuiApplication.setHighDpiScaleFactorRoundingPolicy(Qt.HighDpiScaleFactorRoundingPolicy.PassThrough)
    
    app = QApplication(sys.argv)
    app.setStyleSheet('''
        QWidget {
            font-size: 17px;
        }
    ''')
    
    myApp = MyApp()
    myApp.show()

    try:
        sys.exit(app.exec())
    except SystemExit:
        print('Closing Window...')