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可以用其他方法实现，代码如下：

import paddle 

def negate(t):
    t = paddle.cast(t, int)
    tmp = paddle.ones_like(t) - t
    return paddle.cast(tmp, bool)

a = paddle.to_tensor([False, True])
print(f"a: {a}")
b = negate(a)
print(f"b: {b}")