def deco(params): print('floor1') def inner(func): print('floor2') def warp(): print('floor3') def warp1(): print('装饰开始') for i in range(params): func() print('装饰结束') print('out3') return warp1() print('out2') return warp print('out1') return inner@deco(5)def demo(): print('ok')if __name__ == '__main__': demo()为什么把return warp1()后的括号去掉warp1就不会执行，而它之前的都没加括号为啥可以执行