python - sort DataTable in Flet - Stack Overflow

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I am trying to make a sorted DataTable in Flet but it doesn't seem to work and I don't know why. My code is the following but it doesn't sort the table and it doesn't display the sort indicator either.

import flet as ft
import random

class Empleado:
    def __init__(self):
        nombres = ["nombre1", "nombre2", "nombre3", "nombre4", "nombre5", "nombre6", "nombre7"]
        apellidos = ["apellido1", "apellido2", "apellido3", "apellido4", "apellido5", "apellido6", "apellido7"]
        self.numero_legajo = random.randint(1,50)
        self.nombre = random.choice(nombres)
        self.apellido = random.choice(apellidos)
        self.cuil = random.randint(100000000000, 999999999999)

def main(page: ft.Page):    
    lista_empleados = [Empleado() for i in range(5)]

    page.add(
        ft.DataTable(
            columns=[
                ft.DataColumn(ft.Text("Legajo")),
                ft.DataColumn(ft.Text("Nombre y Apellido")),
                ft.DataColumn(ft.Text("C.U.I.L."))
            ],
            rows=[
                (
                    ft.DataRow(
                        cells=[
                            ft.DataCell(ft.Text(value=empleado.numero_legajo)),
                            ft.DataCell(ft.Text(value=f"{empleado.nombre} {empleado.apellido}")),
                            ft.DataCell(ft.Text(value=empleado.cuil)),
                        ],
                        data=empleado
                    )
                ) for empleado in lista_empleados
            ],
            sort_column_index=0,
            sort_ascending=False,
        )
    )

ft.app(main)

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