Tensorflow error: Using a `tf.Tensor` as a Python `bool` is not allowed

In TF2, you could just decorate the function myfunc() with @tf.function:

@tf.function
def myfunc(x):
    if (x > 0):
        return 1
    return 0

Use tf.cond:

tf.cond(tf.greater(x, 0), lambda: 1, lambda: 0)

Another solution, which in addition supports multi-dimensional tensors:

tf.sign(tf.maximum(x, 0))

Note, however, that the gradient of this activation is zero everywhere, so the neural network won't learn anything with it.

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