Using a tf.Tensor as a Python bool is not allowed这个报错该如何解决？

Question

TypeError:
Using a tf.Tensor as a Python bool is not allowed. Use if t is not None: instead of if t: to test if a tensor is defined, and use TensorFlow ops such as tf.cond to execute subgraphs conditioned on the value of a tensor.

def spiky(x):

r1 = 2/(1+pow(math.e,-x))-1
if r1 <= -1+Amin*W/2:
    return -1.
else:
    return 1.

这是我自己定义的激活函数，输入应该是一个[1,1]的Tensor，问题应该出在这里，但完全不知道如何解决，跪求大佬教教我

Answer 1

请问一下您的问题如何解决的啊，我也遇到了这个问题，方便的话，能否告知一下