How to open another window using PyQt

Question

I showed another window to the user when he clicks 'Go to work' and hide current window. But when I hide current window, there's no application icon in the taskbar. How can I do what I want? I want to show new window and hide current, but the icon in the taskbar is not showing.

def start(self):
        window = MainWindow(self)
        window.show()
        self.hide()

Answer 1

Switch between self.hide() and self.showMinimized()

def start(self):
    window = MainWindow(self)
    window.show()
    self.showMinimized()