How to make a Tkinter window jump to the front?

This answer is to make one Tkinter Window pop up overtop of other Tkinter windows.

In my app I have a large window toplevel which calls a much smaller window top2 which initially appears on top of toplevel.

If user clicks within toplevel window it gains focus and smothers much smaller top2 window until toplevel window is dragged off of it.

The solution is to click the button in toplevel to launch top2 again. The top2 open function knows it is already running so simply lifts it to the top and gives it focus:

def play_items(self):
    ''' Play 1 or more songs in listbox.selection(). Define buttons:
            Close, Pause, Prev, Next, Commercial and Intermission
    '''

    if self.top2_is_active is True:
        self.top2.focus_force()     # Get focus
        self.top2.lift()            # Raise in stacking order
        root.update()
        return                      # Don't want to start playing again

On macOS High Sierra, py3.6.4, here is my solution:

def OnFocusIn(event):
    if type(event.widget).__name__ == 'Tk':
        event.widget.attributes('-topmost', False)

# Create and configure your root ...

root.attributes('-topmost', True)
root.focus_force()
root.bind('<FocusIn>', OnFocusIn)

The idea is to bring it to the front until user interacts with it, i.e., taking focus.

I tried the accepted answer, .after_idle(), and .after(). They all fail in one case: When I run my script directly from an IDE like PyCharm, the app window will stay behind.

My solution works in all the cases that I encountered.

This will lift the window to the front, and also focus on the window.

def lift_window(window):
    window.attributes('-topmost',True)
    window.attributes('-topmost',False) # disable the topmost attribute after it is at the front to prevent permanent focus 
    window.focus_force() # focus to the window