How to use the glfw.set_window_should_close function in glfw

def alarm_handler(signal_number, stack_frame):
        """
        Close the current GLFW window when called due to a SIGALRM.
        """
        assert signal_number == signal.SIGALRM
        window = glfw.get_current_context()
        assert window is not None
        glfw.set_window_should_close(window, True)

def processInput(window):
    if glfw.get_key(window, glfw.KEY_ESCAPE) == glfw.PRESS:
        glfw.set_window_should_close(window, GL_TRUE)

def key_callback(self, window, key, scancode, action, mods):
        "press ESCAPE to quit the application"
        if key == glfw.KEY_ESCAPE and action == glfw.PRESS:
            glfw.set_window_should_close(self.window, True)

def close(self):
        glfw.set_window_should_close(self.window, True)

def processInput(window):
    if glfw.get_key(window, glfw.KEY_ESCAPE) == glfw.PRESS:
        glfw.set_window_should_close(window, GL_TRUE)