PySide6 TypeError when trying to open window for second time

I have two classes in PySide6. One is the main window and the second one is a widgetWindow. The main window is opening the widgetWindow with this function:

def connect_modbus(self):
    # connect with modbus 
    self.connect_modbus = ConnectModbusWindow()
    self.connect_modbus.show()

The ConnectModbusWindow Class looks like this:

class ConnectModbusWindow(QWidget, Ui_ModbusConfig):
    def __init__(self):
        super().__init__()
        self.setupUi(self)

I have no problem opening the ConnectModbusWindow for the first time. But when I try it for the second time i get the following error:

TypeError: ‘ConnectModbusWindow’ object is not callable

It doesn’t matter if I am closing the window, with the red close button or with self.close().

I created the Ui_ModbusConfig class which gets inherited by ConnectModbusWindow in the pyside6-designer.

Answer

I gave my variable self.connect_modbus the same name as the function itself.

def connect_modbus(self):
    # connect with modbus 
    self.connect_modbus = ConnectModbusWindow()
    self.connect_modbus.show()