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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def __buttonEvent(event=None, buttons=None, virtual_event=None):
 """ Handle an event that is generated by a person interacting with a button. It may be a button press or a key press. """

    # TODO: Replace globals with tkinter variables
    global boxRoot, __replyButtonText

    # Determine window location and save to global
    m = re.match("(\d+)x(\d+)([-+]\d+)([-+]\d+)", boxRoot.geometry())
    if not m:
        raise ValueError(
            "failed to parse geometry string: {}".format(boxRoot.geometry()))
    width, height, xoffset, yoffset = [int(s) for s in m.groups()]
    st.rootWindowPosition = '{0:+g}{1:+g}'.format(xoffset, yoffset)

    # print('{0}:{1}:{2}'.format(event, buttons, virtual_event))
    if virtual_event == 'cancel':
        for button_name, button in list(buttons.items()):
            if 'cancel_choice' in button:
                __replyButtonText = button['original_text']
        __replyButtonText = None
        boxRoot.quit()
        return

    if virtual_event == 'select':
        text = event.widget.config('text')[-1]
        if not isinstance(text, ut.str):
            text = ' '.join(text)
        for button_name, button in list(buttons.items()):
            if button['clean_text'] == text:
                __replyButtonText = button['original_text']
                boxRoot.quit()
                return

    # Hotkeys
    if buttons:
        for button_name, button in list(buttons.items()):
            hotkey_pressed = event.keysym
            if event.keysym != event.char:  # A special character
                hotkey_pressed = '<{}>'.format(event.keysym)
            if button['hotkey'] == hotkey_pressed:
                __replyButtonText = button_name
                boxRoot.quit()
                return

    print("Event not understood")