QTableView Example

table.py

import sys
import random
from PySide2 import QtCore, QtWidgets


class TableModel(QtCore.QAbstractTableModel):
    def __init__(self, parent=None, data=None, columns=None, *args):
        QtCore.QAbstractTableModel.__init__(self, parent, *args)
        self.dataset = data
        self.columns = columns

    def rowCount(self, parent) -> int:
        return len(self.dataset)

    def columnCount(self, parent) -> int:
        return len(self.columns)

    def data(self, index: QtCore.QModelIndex, role):
        if not index.isValid():
            return None
        if role == QtCore.Qt.DisplayRole:
            return str(self.dataset[index.row()].get(self.columns[index.column()]))

    def headerData(self, section: int, orientation: QtCore.Qt.Orientation, role: int):
        if role == QtCore.Qt.DisplayRole and orientation == QtCore.Qt.Horizontal:
            return self.columns[section]

    def setData(self, index: QtCore.QModelIndex, value, role: int) -> bool:
        return False

    def flags(self, index: QtCore.QModelIndex) -> QtCore.Qt.ItemFlags:
        return QtCore.Qt.ItemIsEnabled


if __name__ == "__main__":
    def random_alphanumeric_string(length):
        return "".join((random.choice(
            '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ') for _ in range(length)))

    data = []
    fields = ["id", "name", "value"]
    for i in range(100000):
        data.append({"id": i, "name": random_alphanumeric_string(6), "value": random.randint(0, 10000)})

    app = QtWidgets.QApplication(sys.argv)
    data_model = TableModel(data=data, columns=fields)
    table_view = QtWidgets.QTableView()
    table_view.setModel(data_model)
    table_view.show()
    
    app.exec_()