Suggestion for the tableview_numpy.py code

[flideros]

To make the tableview_numpy example more interesting, I added custom column headers to the code.`

import sys
import numpy as np
from PyQt6.QtWidgets import QTableView, QMainWindow, QApplication
from PyQt6.QtCore import Qt, QAbstractTableModel

class TableModel(QAbstractTableModel):
    def __init__(self, data, headers):
        super(TableModel, self).__init__()
        self._data = data
        self._headers = headers

    def data(self, index, role):
        if role == Qt.ItemDataRole.DisplayRole:
            # Note: self._data[index.row()][index.column()] will also work
            value = self._data[index.row(), index.column()]
            return str(value)

    def rowCount(self, index):
        return self._data.shape[0]

    def columnCount(self, index):
        return self._data.shape[1]
    
    def headerData(self, section, orientation, role=Qt.ItemDataRole.DisplayRole):
        if role == Qt.ItemDataRole.DisplayRole:
            if orientation == Qt.Orientation.Horizontal:
                return self._headers[section] if section < len(self._headers) else "n/a"
            else:
                return str(section)
        return None
        
class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        self.table = QTableView()

        data = np.array(
            [
                [1, 9, 2],
                [1, 0, -1],
                [3, 5, 2],
                [3, 3, 2],
                [5, 8, 9],
            ]
        )
        headers = ['one', 'two', 'three']        
        
        self.model = TableModel(data, headers)
        self.table.setModel(self.model)

        self.setCentralWidget(self.table)
        self.setGeometry(600, 100, 400, 200)
        
app = QApplication(sys.argv)
window = MainWindow()
window.show()
app.exec()