Sorting numeric column in QTableWidget

Question

I am trying to sort a numeric column in QTableWidget using PyQT5. I read some examples and tried but it doesn't work very well. It always give same result back.

This is before sorting

This is after sorting

Answer 1

The problem is that using strings in the QTableWidgetItem instead of numbers. Given this, there are several options:

• Store numbers instead of strings:

   import sys from PyQt5 import QtCore, QtWidgets app = QtWidgets.QApplication(sys.argv) w = QtWidgets.QTableWidget(100, 1) w.setSortingEnabled(True) for i in range(w.rowCount()): it = QtWidgets.QTableWidgetItem()  w.setItem(i, 0, it) w.resize(640, 480) w.show() sys.exit(app.exec_())

• Override the __lt__ method of QTableWidgetItem:

   import sys from PyQt5 import QtWidgets class TableWidgetItem(QtWidgets.QTableWidgetItem): def __lt__(self, other): try: return float(self.text()) < float(other.text()) except ValueError: return super().__lt__(other) app = QtWidgets.QApplication(sys.argv) w = QtWidgets.QTableWidget(100, 1) w.setSortingEnabled(True) for i in range(w.rowCount()): it = TableWidgetItem(str(i)) w.setItem(i, 0, it) w.resize(640, 480) w.show() sys.exit(app.exec_())