Fastest way to populate QTableView from Pandas data frame

Question

I\'m very new to PyQt and I am struggling to populate a QTableView control.

My code is the following:

def data_frame_to_ui(self, data_frame):
                


        

Answer 1

Here is fully working copy-paste example for PyQT5 based on @Frederick Li answer with minor modifications.

from PyQt5 import QtGui, QtWidgets
from PyQt5.QtCore import Qt
import sys
import pandas as pd

class MainWindow(QtWidgets.QMainWindow):
    def __init__(self, *args, obj=None, **kwargs):
        super(MainWindow, self).__init__(*args, **kwargs)

        self.centralwidget = QtWidgets.QWidget(self)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.MinimumExpanding, QtWidgets.QSizePolicy.Fixed)
        self.centralwidget.setSizePolicy(sizePolicy)

        self.pdtable = QtWidgets.QTableView(self.centralwidget)
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.MinimumExpanding, QtWidgets.QSizePolicy.Fixed)
        self.pdtable.setSizePolicy(sizePolicy)

        dataPD = [['tom', 10.0, 180.3], ['nick', 15.0, 175.7], ['juli', 14.0, 160.6]]
        df = pd.DataFrame(dataPD, columns=['Name', 'Age', 'Height'])
        print(df.dtypes)
        self.model = PandasTableModel(df)
        self.pdtable.setModel(self.model)

        self.setCentralWidget(self.centralwidget)


class PandasTableModel(QtGui.QStandardItemModel):
    def __init__(self, data, parent=None):
        QtGui.QStandardItemModel.__init__(self, parent)
        self._data = data
        for row in data.values.tolist():
            data_row = [ QtGui.QStandardItem("{}".format(x)) for x in row ]
            self.appendRow(data_row)
        return

    def rowCount(self, parent=None):
        return len(self._data.values)

    def columnCount(self, parent=None):
        return self._data.columns.size

    def headerData(self, x, orientation, role):
        if orientation == Qt.Horizontal and role == Qt.DisplayRole:
            return self._data.columns[x]
        if orientation == Qt.Vertical and role == Qt.DisplayRole:
            return self._data.index[x]
        return None


if __name__ == "__main__":
    app  = QtWidgets.QApplication(sys.argv)
    app.setStyle("Fusion")
    main = MainWindow()
    main.show()
    main.resize(600, 400)
    sys.exit(app.exec_())