在QAbstractTableModel中设置数字的PyQt格式

from PyQt5.QtCore import Qt, QAbstractTableModel

class CustomTableModel(QAbstractTableModel):
    def __init__(self, data, headers):
        super().__init__()
        self.data = data
        self.headers = headers

    def rowCount(self, parent):
        return len(self.data)

    def columnCount(self, parent):
        return len(self.headers)

    def data(self, index, role):
        if role == Qt.DisplayRole:
            value = self.data[index.row()][index.column()]
            # 设置数字的格式
            if isinstance(value, int) or isinstance(value, float):
                return "{:.2f}".format(value)  # 保留两位小数
            else:
                return str(value)
        return None

    def headerData(self, section, orientation, role):
        if role == Qt.DisplayRole and orientation == Qt.Horizontal:
            return self.headers[section]
        return None

from PyQt5.QtWidgets import QApplication, QTableView
import sys

if __name__ == '__main__':
    app = QApplication(sys.argv)
    
    data = [
        [1, 2.345, "text1"],
        [3, 4.567, "text2"],
        [5, 6.789, "text3"]
    ]
    headers = ["Column 1", "Column 2", "Column 3"]
    
    model = CustomTableModel(data, headers)
    table_view = QTableView()
    table_view.setModel(model)
    table_view.show()
    
    sys.exit(app.exec_())