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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 handle_left_double_click(self, info):
 """Whatever we want to do, when the VideoWidget has been double-clicked with the left button """

        if (self.double_click_focus == False):  # turn focus on
            print(self.pre, "handle_left_double_click: focus on")
            self.cb_focus()
        else:  # turn focus off
            print(self.pre, "handle_left_double_click: focus off")
            self.cb_unfocus()
        self.double_click_focus = not(
            self.double_click_focus)