PyQt: How to sort QTableView columns of a excel file(strings and numericals and datetype)

Question

This is a follow up question to: PyQt: How to sort QTableView columns(strings and numericals)

Now I am planning to do the same sorting for the excel files

Here i

Answer 1

Below is a demo script which reads both csv and excel files, and should sort dates, ints, floats, and strings correctly.

import sys
import pandas as pd, numpy as np
from PyQt4 import QtCore, QtGui

class Window(QtGui.QWidget):
    def __init__(self):
        super(Window, self).__init__()
        self.model = QtGui.QStandardItemModel(self)
        self.model.setSortRole(QtCore.Qt.UserRole)
        self.tableView = QtGui.QTableView()
        self.tableView.setSortingEnabled(True)
        self.tableView.setModel(self.model)
        self.button = QtGui.QPushButton('Open CSV', self)
        self.button.clicked.connect(self.handleButton)
        layout = QtGui.QVBoxLayout(self)
        layout.addWidget(self.tableView)
        layout.addWidget(self.button)

    def handleButton(self):
        filters = (
            'CSV files (*.csv *.txt)',
            'Excel Files (*.xls *.xml *.xlsx *.xlsm)',
            )
        path, filter = QtGui.QFileDialog.getOpenFileNameAndFilter(
            self, 'Open File', '', ';;'.join(filters))
        if path:
            csv = filter.startswith('CSV')
            if csv:
                dataframe = pd.read_csv(path)
            else:
                dataframe = pd.read_excel(path)
            self.model.setRowCount(0)
            dateformat = '%m/%d/%Y'
            rows, columns = dataframe.shape
            for row in range(rows):
                items = []
                for column in range(columns):
                    field = dataframe.iat[row, column]
                    if csv and isinstance(field, str):
                        try:
                            field = pd.to_datetime(field, format=dateformat)
                        except ValueError:
                            pass
                    if isinstance(field, pd.tslib.Timestamp):
                        text = field.strftime(dateformat)
                        data = field.timestamp()
                    else:
                        text = str(field)
                        if isinstance(field, np.number):
                            data = field.item()
                        else:
                            data = text
                    item = QtGui.QStandardItem(text)
                    item.setData(data, QtCore.Qt.UserRole)
                    items.append(item)
                self.model.appendRow(items)

if __name__ == '__main__':

    app = QtGui.QApplication(sys.argv)
    window = Window()
    window.setGeometry(500, 150, 600, 400)
    window.show()
    sys.exit(app.exec_())